You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Timothy Hill here.

ASSISTANT: Hill, what can I do for you?

USER: I want to cancel my recent reservation due to my grand father health, hope your helping me out.

ASSISTANT: Sorry to hear that, I can cancel your reservation. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry Hill, as per the requested criteria there is no reservation found.

USER: Ok, no issues.

ASSISTANT: Thank you for communicating us with your query.

USER: Thank you for your help.

ASSISTANT: Welcome.