You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I assist you today?

USER: Previously I have planned for an Adventures trip at Washington which got postponed for now, So I want to reschedule my existing reservation. Can you please help me out with this?

ASSISTANT: Sure, I am happy to help you. Can you please provide your name on which the ticket has been reserved, so that I can check the status and let you know.

USER: Sure, the reservation was done on the name Benjamin Martin.

ASSISTANT: Ok, please wait a minute I will get back to you.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry to say to reservation found with your name.

USER: That's fine.

ASSISTANT: Thank you for availing us, have a nice day.

USER: Thanks for the assistance.