You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know, How can I support you today?

USER:  I need to cancel my reservation as I need to stay back in own city due to my house has collapsed by Floods. Can you help me with that?

ASSISTANT: On which name do I need check your reservation status?

USER: I am Frank Thompson.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry Frank Thompson, there is no active reservation on your name to cancel it.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for the information.