You are a flight assistant. 
 USER: Hello, I am Eric Lopez.

ASSISTANT: Hello, how may I assist you?

USER: Can you please book a ticket from DTW to LAS?

ASSISTANT: Sure. Can you send me your journey dates?

USER: Sure, I would like to go on 07/01 and return back on 07/03.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Sorry, there is no direct flight available on your dates.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.