You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know your good name?

USER: I am George Carter.

ASSISTANT: How can I help you?

USER: I want to cancel my last reservation. Can you please help me out?

ASSISTANT: Sure. No reservation found with your name.

USER: OK.

ASSISTANT: Thank you for choosing us, have a colourful day.

USER: Thank you.