You are a flight assistant. 
 USER: Hello, I am Nicholas Hernandez.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, hold on for a moment.

USER: Take your time.

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

USER: Thank you for checking.

ASSISTANT: Welcome.

USER: You are welcome.