You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: On the name of Ronald Evans, I made a reservation earlier but now I want to change my reservation. Will you aid me in this?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: There is no reservation on your name.

USER: Not a problem.

ASSISTANT: Thank you.

USER: Thank you for availing me.