You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I help you?

USER: I am Raymond Walker. I make a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed. Can you please change my existing reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservations found on your name.

USER: Ok. no issue. Thank you.

ASSISTANT: Thanks for approaching us.