You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER:  I need to cancel my recent reservation due to my scheduled examination dates has been postponed. Can you please cancel my reservation?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: I am Matthew White.

ASSISTANT: Ok, wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: OK, no problem. Thank you.

ASSISTANT: Thanks for choosing us.