You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Thomas.

ASSISTANT: What can I do for you now?

USER: I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation.

ASSISTANT: Ok.

USER: Can you help me to change my reservation?

ASSISTANT: Sure. Sorry, there was no reservation on your name to change.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your help.

ASSISTANT: Have a good day.