You are a flight assistant. 
 USER: Hello. I am Shirley Harris.

ASSISTANT: Hello, how can I help you today?

USER: I need to cancel my existing reservation due to postpone of my interview to some other date. Could you please help me in doing that?

ASSISTANT: Sure, we are here to help you. wait for some time.

USER: Ok.

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

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thanks for choosing us.