You are a flight assistant. 
 USER: Hello, I am Gregory Miller.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a ticket from DEN to LGA?

ASSISTANT: Sure. Can I have your dates of journey?

USER: Sure, I would like to go on 08/09 and return back on 08/11.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a connecting flight available with Frontier airline, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1007. Happy journey.

USER: Thank you for booking.

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

USER: Welcome.