You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I give assistance to you?

USER: I want to change my reservation which is done recently due to some problems, can you please help me out?

ASSISTANT: Sure, we are here to help you to change it.

USER: Thank you for considering my request.

ASSISTANT: To proceed further, may I know your name?

USER: Sure, my name is Virginia Davis.

ASSISTANT: Ok, please wait for a moment and I will check with the reservation on your name.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting, there was no active reservation found on your name to change it.

USER: Ok, no problem. I will try with the another booking agency.

ASSISTANT: Thank you for availing us.