You are a flight assistant. 
 USER: Hello, I am Laura Nelson.

ASSISTANT: Hello, how may I assist you?

USER: Can you book a ticket from PHX to DEN?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am planning to start on 04/07 and return back on 04/09.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Make sure that it is a direct flight.

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

USER: No issues. Thank you for checking.

ASSISTANT: Welcome, thank you for choosing us.

USER: You are welcome.