You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Raymond Jones. Can you help me to change my existing reservation?

ASSISTANT: Sure, I am here to help you. Hold on for a moment. Let me check.

USER: Sure, take your time.

ASSISTANT: Sorry Jones, there are no flights reserved on your name.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us, have a good day.

USER: You are welcome.