You are a flight assistant. 
 USER: Hello.

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

USER: I am Carol Collins from Washington. Can you please book a flight ticket from DCA to DEN?

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

USER: Thank you for your positive response, I want to take off on 11/23 and please confirm my return ticket also on 11/25.

ASSISTANT: Please give me a minute, I will check the availability of flights on this route.

USER: Ok, take your time and find a best flight for me.

ASSISTANT: There is a flight with ticket fare 100 in spirit airlines with a stopover. Is it ok for you?

USER: That's perfect, please confirm this flight ticket for me.

ASSISTANT: Your booking is confirmed with flight number 1001.

USER: Thank you for assisting me.

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