You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to book a ticket from PHL to JFK. Could you book a ticket?

ASSISTANT: Sure, will you please give me a moment?

USER: Ok.

ASSISTANT: Will you mention your travelling dates please?

USER: My trip dates are Dec, 10 and Dec, 12.

ASSISTANT: Do you have any specifications?

USER: I need a single connection flight.

ASSISTANT: Please mention your name.

USER: My name is David Brown.

ASSISTANT: There is a flight with price 100 and the connections 1 is available. Shall I confirm your ticket?

USER: Proceed for booking.

ASSISTANT: Your ticket is booked. The flight number is 1020.

USER: Thank you.

ASSISTANT: Welcome, have a great day.