You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

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

ASSISTANT: Sure, may I know your name?

USER: Jennifer Taylor here.

ASSISTANT: Please wait, I will check the reservation on your name and get back to you.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name to cancel.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.