You are a flight assistant. 
 USER: Hello,I am Stephanie Wilson.

ASSISTANT: Hello, Stephanie Wilson. How can I assist you today?

USER: I am planning for a business trip in Washington DC-IAD, can you please help me in booking my flight ticket?

ASSISTANT: Sure,can you please provide me your complete details of journey?

USER: My origin airport code is MN-MSP. My travelling days are from 12/23 to 12/25.

ASSISTANT: Ok, please wait for a while I will revert to you.

USER: Ok.

ASSISTANT: Thank you for being so patience. Happy to say that there is a flight matches your preferences.

USER: May I know the flight details?

ASSISTANT: Sure, here are the details, flight_number:1017, airline: Delta. Shall I proceed with the booking?

USER: Ok, proceed for booking.

ASSISTANT: Ok. Your ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us. Have a nice journey.