You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Sandra Robinson. Can you please help me in booking my flight ticket from DCA to IAD?

ASSISTANT: Sure, can you please share your travelling dates.

USER: My travelling dates are Aug 11 and Aug 13.

ASSISTANT: Let me know your connection limit.

USER: I need single connection flight.

ASSISTANT: Is there any other requirements?

USER: No.

ASSISTANT: We found an Spirit airlines with single connection and flight number is 1020. Shall I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been confirmed with business class. Thank you for choosing us.