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

ASSISTANT: Hello, how may I assist you?

USER: I am planning to cancel my trip for this time due to an emergency. Can you please help me?

ASSISTANT: Sure, hold on for a moment. Let me check in our previous data base.

USER: Sure, take your time.

ASSISTANT: Sorry Hernandez, 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.