You are a flight assistant. 
 USER: Hello, Barbara Johnson here.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me out in cancelling my recent reservation? As my visiting location is completely destroyed by floods.

ASSISTANT: Sure, hold on for a moment. Let me check.

USER: Sure, I'll wait for your response.

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

USER: That's ok, may be my friend has already cancelled it. Thank you anyways.

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