You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you now?

USER: Jerry Lewis here.

ASSISTANT: Glad to meet you Lewis.

USER: I would like to change my existing reservation due to the heavy rains, hoping that your helping me out.

ASSISTANT: yes, you are at right place, I can help you. Be on hold I will check in our data base and revert you back is there booking found.

USER: Sure.

ASSISTANT: Thank you for being on hold Lewis. As per your information there is no ticket found to change the booking on Jerry Lewis name. Hope you can understand that one.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for your time in reaching us with your valuable and keep contacting us in future if there is any help need.

USER: Welcome.