You are a flight assistant. 
 USER: Hi, I am David Gonzalez.

ASSISTANT: Hello, how may I help you for the day?

USER: I would like to book a flight ticket with single connection from DC to visit Disneyland in MI, could you please help me to book a flight ticket?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: My source and destination airport codes are DCA and DTW.

ASSISTANT: Can I know your planned travel dates, please?

USER: I want to start on Jan 17th and my return date would be on Jan 19th.

ASSISTANT: Do you have any specifications?

USER: I want to return in the afternoon.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a connecting flight in Delta Airlines of flight number 1029 returns at afternoon.

USER: That's perfect, you can book the ticket with this airline.

ASSISTANT: Your booking has been processed.

USER: Thank you for kind service in booking.

ASSISTANT: Than you for approaching us.