You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: As I have done my reservation last week to Denver but all of sudden my trip got changed to visit Austin in the month of October. So, can you please help me in modification of my reservation?

ASSISTANT: Sure, may I know your name please?

USER: Sure, my name is Samuel Gonzalez.

ASSISTANT: Please stay online.

USER: Ok.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name.

USER: Not an issue with that, anyways thank you for the information.

ASSISTANT: Thank you for opting us.