You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: Thank you for accepting my request, myself Helen Moore.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, No reservation was found on your name to change it.

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

ASSISTANT: Thank you for choosing us.