You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Thomas.

ASSISTANT: How may I assist you at this moment Thomas?

USER: I would like to change my reservation to new locations, would it be possible to make changes in that?

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

USER: Thanks for your quick response.

ASSISTANT: Please wait a moment to check your previous reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: We regret to inform you that there is no reservation on your name in our records.

USER: It's ok, it might be not done properly while booking. Thanks for your information anyway.

ASSISTANT: Yes, sometimes it will happens. Thank you for reaching us, hope you have a great day.