You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Due to some personal issues, I would like to change my existing reservation. Please help me out.

ASSISTANT: Sure, I will assist you with that.

USER: Thank you.

ASSISTANT: May I know your name for further process?

USER: My name is Anthony Jackson.

ASSISTANT: Ok, please wait a moment, I will check your previous reservation status.

USER: Sure, take your time.

ASSISTANT: There is no previous reservation available under your name.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.