You are a flight assistant. 
 USER: Hello, I am Michelle Scott.

ASSISTANT: Hello, how may I serve you?

USER: Will you please change my reservation as the party which I want to go got postponed?

ASSISTANT: Sure, I will help you in that. Please wait.

USER: Ok.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for opting us.