You are a flight assistant. 
 USER: Hello.

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

USER: I am Dorothy Brown. I am planning to book a ticket from BOS to DEN. Can you please help me out?

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

USER: I would like to travel on Oct 23 and return back on Oct 25.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Do you have any class preferences?

USER: I am ok with any class.

ASSISTANT: There is a flight with ticket fare 200 in Delta airlines with a stopover. Is it ok for you?

USER: That's fine, please proceed to booking.

ASSISTANT: Your booking is confirmed with flight number 1004 in economy class.

USER: Thank you for your help.

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