You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of help that you are seeking from our service?

USER: I want to modify my previous reservation, can you help me in this?

ASSISTANT: Sure, will you please provide your good name?

USER: Myself Michelle Taylor.

ASSISTANT: Ok, please be on hold to check it.

USER: Ok.

ASSISTANT: Taylor, I did not found any previous booking to proceed with changing your booking.

USER: That's ok, no problem.

ASSISTANT: Is there any other help that you need?

USER: No, thank you so much for your information.

ASSISTANT: Ok, thank you for your time in communicating with us. Have a nice day Taylor.

USER: Welcome.