You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I assist you?

USER: I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it is postponed. So, can you please assist me in changing my reservation?

ASSISTANT: Sure, Can you please mention your name?

USER: Please check the reservation with name Barbara Carter.

ASSISTANT: I will check with the previous reservation list and get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we could not found your name in the reservation list.

USER: Ok, not a problem. Thanks for the information.

ASSISTANT: Thanks for availing us, Have a great day!.