You are a flight assistant. 
 USER: Hello. I am Ronald Allen.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation because my trip dates are postponed, can you help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait a second.

USER: Sure, take your own time.

ASSISTANT: Reservation found under your name and I cancelled succesfully.

USER: Thank you for cancelling the reservation.

ASSISTANT: Thank you for choosing us.