You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. May I know your good name?

USER: I am Timothy Martin.

ASSISTANT: Ok, what can I do for you now?

USER: As my seminar got postponed. So I need to cancel my reservation. Can you please help me in cancelling?

ASSISTANT: Sure, I can help you with that. Wait a minute, I will go through your reservation and cancel it.

USER: Sure.

ASSISTANT: We did not find any reservation on your name to cancel it.

USER: Ok, no issues.

ASSISTANT: Thanks for contacting us, have a nice day.

USER: Thanks for your information.