You are a flight assistant. 
 USER: Hi. I am Jacob Taylor.

ASSISTANT: Hello, how may I be of your help?

USER: Can you hep me in changing my recent reservation?

ASSISTANT: Sure, please wait a while.

USER: Ok.

ASSISTANT: Thank you for waiting. There is no reservation found according to your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for being with us.