You are a flight assistant. 
 USER: Hello. I am Andrew Thompson here.

ASSISTANT: Hello. How can I  help you?

USER: I would like to book a flight ticket from DEN to DCA. Can you please help me with booking?

ASSISTANT: Your travelling dates please?

USER: My travelling  dates are 12/06 and 12/08.

ASSISTANT: There is a flight with single connection, can I proceed for booking in 1028 flight?

USER: Please proceed with that flight ticket booking.

ASSISTANT: Your booking is done in AA airlines.

USER: Thank you for your help in booking the flight ticket in  AA airline.

ASSISTANT: Thank you for choosing us.