You are a flight assistant. 
 USER: Hello, I am Eric Green.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my ticket due to an emergency. Can you help me to cancel my ticket?

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

USER: Sure, I will wait.

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

USER: No issues. Thank you for checking.

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

USER: You are welcome.