You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you now?

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 with that.

USER: Thank you for accepting my request.

ASSISTANT: May I know your good name?

USER: Myself Deborah Evans.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for the waiting, sorry there is no reservation found on your name in our system data.

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

ASSISTANT: Thank you for visiting us, have a nice day.