You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to do some changes in my existing reservation. Can you help me for that?

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

USER: My name is Ryan White.

ASSISTANT: Ok, wait for some time I will check the reservations on your name and get back to you.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thanks for approaching us.