You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carolyn Martinez.

ASSISTANT: How may I best oblige you today?

USER: I need to book a flight ticket from DEN to DFW, Can you please help me for booking?

ASSISTANT: Sure, could you please provide your planned journey dates?

USER: I would like to travel on 06/20 to return o 06/22.

ASSISTANT: Ok, let me know your price limit.

USER: I can pay up to 200.

ASSISTANT: There is a connecting flight in 1004 AA airlines and the fare is 100. Shall I proceed?

USER: Ok, proceed for booking.

ASSISTANT: your booking is done with AA airlines.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.