You are a flight assistant. 
 USER: Hi, I am Janet Baker.

ASSISTANT: Hello Janet, how can I assist you now?

USER: I just want to change an existing reservation due to my plan to meet my old friend got post oone. Can you help me with this?

ASSISTANT: Ok, no problem. I can change as per your request.

USER: Thank you.

ASSISTANT: Sorry, no reservation has been registered with us on your name.

USER: Ok, not an issue.

ASSISTANT: Thanks for communicating with us.

USER: Thanks for your information.