You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jacob Thomas.

ASSISTANT: How can I aid you today?

USER: Due to a sudden meeting at office with my client, on my boarding day, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Ok, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry to say that, there is no reservation found on your name in our database.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.