You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Please help me to book a flight ticket from SEA to DFW.

ASSISTANT: Sure, let me know your trip dates?

USER: My trip dates are from July, 13 to July, 15.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other preferences?

USER: I prefer to return in the afternoon.

ASSISTANT: May I know your name?

USER: Scott Evans.

ASSISTANT: We found a American airline with flight number 1019 with fare 100 and class is economy with one connection. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you booking.

ASSISTANT: Thank you for availing us.