You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Steven Hill need to change my reservation as my got postponed, can you please help me?

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

USER: Ok.

ASSISTANT: Thanks for your time. We did not find any reservation on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thanks for the information.