You are a flight assistant. 
 USER: Hi, Michael Robinson here.

ASSISTANT: Hello, how may I assist you today?

USER: I need to visit Washington, to meet my company CEO at white house. Can you help me in booking a ticket from Detroit?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: On 10/23, I want to start and return on 10/25.

ASSISTANT: Where you will land on 10/23?

USER: I will land on DCA.

ASSISTANT: May I know your departure airport code?

USER: I want to start from DTW.

ASSISTANT: There is a connecting flight with price of 100 and 1026 flight number. Shall I proceed?

USER: Ok, Proceed for booking.

ASSISTANT: Your seat has been reserved with Southwest airline.

USER: Thanks for your assistance.

ASSISTANT: Thank you for choosing us.