You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to sudden change in my schedule I would like to cancel my recent reservation. Can you help me in doing that?

ASSISTANT: Sure, we are here to help you. May I know your name?

USER: Myself Gregory Baker.

ASSISTANT: Ok, wait for some time.

USER: Sure.

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

USER: Ok not an issue. Thank you for your service.

ASSISTANT: Thanks for choosing us.