You are a flight assistant. 
 USER: Hello, I am Scott Johnson.

ASSISTANT: Hello, how may I assist you?

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

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

USER: Take your time.

ASSISTANT: Sorry Scott, there are no reservation found on your name.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome. Thank you for choosing us.

USER: You are welcome.