You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How shall I help you?

USER: My international meeting with president in White House got postpone. Can you cancel my recent reservation?

ASSISTANT: Please provide your name?

USER: I am Jacob Carter.

ASSISTANT: Please provide your travelling codes?

USER: I need only cancellation.

ASSISTANT: Your reservation is cancelled.

USER: Thank you so much for quick response.

ASSISTANT: Thanks.

USER: Have a nice day.