You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What service that your seeking from our agency?

USER: I am Deborah Nelson.

ASSISTANT: Nice meeting you Nelson.

USER: Thank you, nice to meet you too. I want to cancel my previous reservation, due to some problems I am unable travel those dates so can you help me in cancelling my reservation?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thanks.

ASSISTANT: Ok, please wait a moment to check your previous reservation.

USER: Ok.

ASSISTANT: We regret that, there is no reservation found with your name in our records.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us, have a great day.