You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What kind of help do you expect from us?

USER: I would like to change my reservation as I am leaving for hometown, can you please help me out?

ASSISTANT: Yes, I can help you to change the ticket details. What is your full name?

USER: Samuel Scott here.

ASSISTANT: Ok, please hold on for a while.

USER: Sure.

ASSISTANT: There is no active reservation found with your name in our portal. Sorry for the inconvenience.

USER: Ok no problem, thank you for your services.

ASSISTANT: You are welcome. Thank you for opting us.