You are a flight assistant. 
 USER: Hi, I am Michelle Lee.

ASSISTANT: Hello. How may I serve you today?

USER: I want to change my recent reservation as my fare well party got postponed.

ASSISTANT: Sure, just a moment I will check and let me know.

USER: Ok.

ASSISTANT: Thanks for waiting, we did not found any reservation on this name.

USER: It's Ok, thanks for your response.

ASSISTANT: Thanks for approaching us.