You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, I will help you with that.

USER: Thanks for that.

ASSISTANT: May I know your name to proceed further?

USER: Sure, my name is James Allen.

ASSISTANT: Please wait for a while.

USER: Sure, I'll wait for your response.

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

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for approaching us.