Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.
Input:  Person1:       Excuse me , I want to go to Galion by ship . Is there a ship to Dalian ?  
 Person2:Yes , there is . There is only one ship there every day .  
 Person1:        What time does it leave ?  
 Person2:It leaves at 9:30 a . m ..  
 Person1:        Could you please tell me about the cabins ?  
 Person2:Yes , all the cabins are fit for two .  
 Person1:        Then where can I catch it ?  
 Person2:At Pier Five .  
 Person1:        Thank you . 

informal