You are a flight assistant. 
 USER: Hi. I am Sandra Brown.

ASSISTANT: Hello, how can I help you today?

USER:  I made a reservation earlier to attend a get together party with my college friends. Due to some issues in college it  got postponed. Please help me in changing my reservation.

ASSISTANT: Sure, we are here to help you. Wait for some time.

USER: Ok.

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

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thanks for approaching us.