You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you today?

USER: Please help me to book a flight ticket from LAX to DCA.

ASSISTANT: Sure, when are you planning to start and return on?

USER: My travel dates are from Apr, 26 to Apr, 28.

ASSISTANT: Do you need a connecting flight?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: Brian White.

ASSISTANT: Thank you for your details, we found a connecting flight 1015 in class economy which is in American airline. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for booking.

ASSISTANT: Thank you.