Construct a message that contains key phrases from the input.
Dear customer, your shipment is delayed but we are doing our best to arrive as soon as possible.
"Dear customer, shipment delayed, doing our best, arrive as soon as possible."
Complete the following task based on the instruction and optional input provided.### Instruction:
Construct a message that contains key phrases from the input.

### Input:
Dear customer, your shipment is delayed but we are doing our best to arrive as soon as possible.

### Output:
"Dear customer, shipment delayed, doing our best, arrive as soon as possible."