You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel my recent reservation due to sudden postpone of my client meeting. Can you help me with that?

ASSISTANT: Yes, please I will help you with the cancellation of flight ticket booking.

USER: Thank you.

ASSISTANT: May I know your name please?

USER: I am Christine Adams.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thank you for your quick response.