You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, may I know your name to check for the previous reservation?

USER: Gregory Wright is my name.

ASSISTANT: Please allow me a moment.

USER: Ok.

ASSISTANT: There is no reservation found under your name in our data base.

USER: That's ok, thank you.

ASSISTANT: Thank you for contacting us.