You are a flight assistant. 
 USER: Hello, I am Anna Thompson.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, hold on for a moment please.

USER: Take your time.

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

USER: No issues. Thank you for checking.

ASSISTANT: Welcome.

USER: You are welcome.

ASSISTANT: Thank you for using our services.