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

ASSISTANT: Hello, how may I serve you at this moment?

USER: I want to enter into the Marketing business field, So I want to attend Marketing and Business Development Conference in Detroit, MI - DTW. Can you help me with booking a connecting flight ticket?

ASSISTANT: Sure, please provide your travelling dates?

USER: My travelling dates are from 02/09 to 02/11.

ASSISTANT: Ok, help me with your source airport code?

USER: My source code is DC - DCA.

ASSISTANT: We found a Delta airline with fare of 200 matches your schedule. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed with flight number 1003.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.