You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Owing to an emergency I had to request you for  cancelling the  reservation.

ASSISTANT: Ok.

USER: Aid me in this with the name of Jacob Roberts.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation on your name.

USER: No problem.

ASSISTANT: Thank you.

USER: Thank you for your kind information.