You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how do I assist you?

USER: My college seminar has been postponed.Can you please help me for cancelling the recent reservation?

ASSISTANT: Ok. Sad to say, no reservation found on your name. May I know your name?

USER: Sure, my name is Cynthia Harris.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your information.