You are a flight assistant. 
 USER: Hello.

ASSISTANT: Please let me know, how best I serve you today?

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

ASSISTANT: Sure, please share me your good name.

USER: Sure, Linda Robinson here.

ASSISTANT: Please wait for a while.

USER: Sure, take your own time.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

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

ASSISTANT: Thank you for availing us.