You are a flight assistant. 
 USER: Hi, I'm looking to book a ticket with normal-cost airline. Please help me with it.

ASSISTANT: Very well. Could I please get your name?

USER: Oh yes, Sorry I forgot to introduce myself. I'm Paul Lewis.

ASSISTANT: Hi Paul.  Do you mind sharing the details of your trip with me?

USER: Sure. I need to book a round trip from DEN to BOS and back to DEN please. And my travel dates would be November 4th to November 6th.

ASSISTANT: Alright.  Please give me one moment while I search for a flight.

USER: Yes, take your time.

ASSISTANT: I've found one flight that matches your request. It's a flight operated by UA in economy for 100.  Shall I book it?

USER: Oh perfect. I think you can go ahead and book it.

ASSISTANT: Your flight has been booked.  Is there anything else that I can help you with?

USER: No, that is it for today. But I would like to say you have a great service. Thank you, have a good day ahead.

ASSISTANT: Your welcome. Please contact us again if you have any questions regarding your flight.  Have a nice day.