You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I want to change my existing reservation, can you please help me with this?

ASSISTANT: Sure. May I know the name on which ticket has been booked?

USER: I am George Edwards.

ASSISTANT: Thank you. Please wait for a moment. Sorry, there is no ticket existing on your name.

USER: Ok, not an issue.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Thank you for your information.