You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Please book a ticket from DTW to DCA to attend Board meeting.

ASSISTANT: Sure, please share me your trip dates.

USER: My travelling dates are Jan 29 and Jan 31.

ASSISTANT:  Can I know your good name please?

USER: I am Patrick Lewis.

ASSISTANT:  Do you have any connection limit?

USER: I want single connected flight.

ASSISTANT: Please share me your specifications.

USER: I don't have any other preferences.

ASSISTANT: We found a Spirit airline and 1009 is flight number with a fare of 100. Shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.