You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you today?

USER: I am Gregory Smith, I would like to cancel my recent reservation, can you help me with this?

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

USER: Sure.

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

USER: That's fine, thanks for your information.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.