You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to book a ticket from IAD to LGA. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, may I know your travel dates?

USER: I am planning to travel on Oct 16 and return back on Oct 18.

ASSISTANT: Do you have any specifications?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your name?

USER: I am Anthony Walker.

ASSISTANT: We found a connecting flight on your details with American Airlines, flight number: 1009. Shall I book this ticket?

USER: That's fine, please proceed the booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you.