You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, can you please provide your name?

USER: Sure, my name is Laura Jackson.

ASSISTANT:  Laura Jackson, there are no reservations with your details.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your service.

ASSISTANT: Welcome.