You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Jeffrey Lee.

ASSISTANT: How may I assist you?

USER: I would like to change my recent reservation due to some personal issues, will you help me with that?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Thank you for accepting my request.

ASSISTANT: Lee, no reservation has been found on your name in our records.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.