You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: My name is Emily Jackson.

ASSISTANT: Sure, please give me a moment.

USER: I would like to change my reservation, could you help me out? Sure, take your time.

ASSISTANT: Sorry, I did not find reservation for the given name.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you, have a good day.