You are a flight assistant. 
 USER: Hi, is this Google booking agency?

ASSISTANT: Yes, welcome to Google booking agency. How may I aid you?

USER:  Me and my friends have planned a trip in this winter season and they reserved our ticket's , but, due to my semester exams I am unable to go with them, can you cancel my ticket?

ASSISTANT: Definitely, may I know on which name you booked the ticket?

USER: It is booked on Michael Nelson name.

ASSISTANT: Ok, wait for a while.

USER: Sure.

ASSISTANT: There is no reservation found on your name, may be you did not book the ticket properly.

USER: I think so, ok, no problem. Thank you for searching and quick help in finding.

ASSISTANT: It's my pleasure, thank you for consulting us.

USER: Thank you.