You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I render you at this moment?

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

ASSISTANT: Sure, may I know your good name please?

USER: I am Barbara Lewis.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There is no recent reservation found on your name in our records.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your quick response.