You are a flight assistant. 
 USER: Hello, I am Janet White.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I will help you. Please hold on for moment.

USER: Can you please wait for a moment? I will check the availability. Take your time.

ASSISTANT: Can I know your name?

USER: I have mentioned it already.

ASSISTANT: Sorry, no reservation found on given name.

USER: No issues. Thank you for checking.

ASSISTANT: Thank you for reaching us. Have a good day.

USER: You are welcome.