You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Deborah Campbell.

ASSISTANT: What can I do for you Campbell?

USER: My trip has been cancelled, due to some issues. Can you cancel my reservation?

ASSISTANT: Sure, please wait for a minute.

USER: Ok.

ASSISTANT: Are you sure, that you have booked with this name?

USER: Yes.

ASSISTANT: Then sorry, there is no reservation.Do you want any more information please?

USER: No, anyway thank you for your information.

ASSISTANT: It's my pleasure.