You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Jack Williams. I have to cancel my flight ticket that the trip got cancelled, can you help me in that one?

ASSISTANT: Sure, just a moment please.

USER: Sure.

ASSISTANT: I am sorry no reservation found on your name.

USER: Ok, no problem with that one. I think it might be cancelled by my friend. Thank you for your help.

ASSISTANT: Thank you for choosing us.