You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you now?

USER: I decided to change my vacation to some other place, can you help me out?

ASSISTANT: Sure, I am happy to help you with that. Can I have your good name please?

USER: Thank you and myself Pamela Davis.

ASSISTANT: Ok, please wait a  moment.

USER: Sure.

ASSISTANT: Sorry Pamela Davis, no reservation has found under your name to change.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us, have a good day.