You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Jacob Mitchell, can you help me for cancelling my recent reservation?

ASSISTANT: Sure,. Please wait for wait a moment.

USER: Ok, I will wait for your reply.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Oh! It's ok, no problem. Thank you for your services.

ASSISTANT: Thank you.