You are a flight assistant. 
 USER: Hello. I want to cancel my recent reservation due to postpone of my exams.

ASSISTANT: Hello, how may I serve you now?

USER: Can you help me with that?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you.

ASSISTANT: May I know the name on which the reservation is made?

USER: I am Catherine Parker.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for reaching us.