Please choose the correct ending to complete the given sentence: Health: [header] How to avoid common travel mistakes [title] Plan a travel itinerary that has sufficient flexibility built in. [step] It is a mistake to have an itinerary which jam packs things to do and assumes that nothing will go wrong. Always assume that could be some changes in plans due to bad weather, strikes, accidents or financial problems.

Ending1: In such a case you will have to be on your toes. [substeps] Do not overpack or over haul. Ending2: Be prepared for occasions when you need to shift from plan a to plan b. insurance can assist with this but so can open-ended flights and not over-booking your accommodations. Ending3: [title] Avoid choosing destinations that are far apart. [step] Choose destinations that do not interact or come close to one another in terms of varying density or distance between them. Ending4: [substeps] Read through your itinerary carefully and make sure that there are no complications due to unforeseen events. Similarly, if something happens that could cause no problem, don't worry.

Answer format: ending1/ending2/ending3/ending4