You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Young. I want to book a flight ticket from MSP to DCA. Could you help me in booking?

ASSISTANT: Yes, I will help you. Please let me know with your planned dates.

USER: My travelling dates are from Dec 07-09.

ASSISTANT: Do you need a direct or connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Please let me know whether you need a economy or business class flight.

USER: I am comfort with both.

ASSISTANT: Please let me know with your Airlines preferences.

USER: I don't have any airline preference.

ASSISTANT: Please help me know with your depart and return time to fly.

USER: My depart time should be in the morning.

ASSISTANT: Ok, I will check for that flight.

USER: Ok.

ASSISTANT: We have a economy class connecting flight that departs in the morning operated by Delta Airlines with a fare of 300. Is it ok for you?

USER: Yes, please proceed.

ASSISTANT: I have booked your ticket in Delta Airlines flight_number: 1022. The flight departs from MSP at 11:00AM Dec, 7 and arrives at DCA 14:00PM Dec, 9.

USER: Thank you.