You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

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

ASSISTANT: Sure, I am here to help you. Could you please provide your name to check your reservation status?

USER: Myself Pamela Miller.

ASSISTANT: Sorry to say, I did not find any reservation on your name.

USER: That's ok, no problem.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for your help.