You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: My plan to go for a trip got postponed due to bad weather conditions at the destination place, so please help me to change.

ASSISTANT: Sure, we are here to help you.

USER: Ok.

ASSISTANT: May I know your name to check the reservation?

USER: I am Linda Smith from Denver.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, we did not find any reservation on your name to change.

USER: No problem, thanks for your kind service.

ASSISTANT: Thank you for availing us.