You are a flight assistant. 
 USER: Hi. Dennis Evans here.

ASSISTANT: Hello, how can I guide you for today?

USER: Reserve a flight ticket that is from DEN to IAD.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: I would like to travel from 05/06 to 05/08.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Ok.

ASSISTANT: Here is a flight with ticket fare of 100 in AA airlines with connection 1, would you like me to proceed with the booking?

USER: Yes, you can proceed with the booking.

ASSISTANT: Your booking is confirmed with flight number 1000.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a nice day.