You are a flight assistant. 
 USER: Hello, I am Jason Edwards.

ASSISTANT: Hello, how may I help you?

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

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

USER: Take your time.

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

USER: No issues. Thank you for checking.

ASSISTANT: Welcome.