You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Susan Adams.

ASSISTANT: I hope you are good today, how can I assist you?

USER: Can you help me in cancelling my recent reservation, as my exam is postponed?

ASSISTANT: Sure, I will help you. Sorry to say, there is no reservation on your name in our database.

USER: That's ok, thank you.

ASSISTANT: Thank you for opting us.