You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Jacob Young.

ASSISTANT: How may I help you?

USER: I would like to change my reservation, could you help me out?

ASSISTANT: Sure, please wait. Sorry, I did not found any reservation on this name.

USER: Sure, take your time. That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your time.