You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Could you please avail me a flight ticket from IAD to JFK?

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: My trip dates are 04/19 - 04/21.

ASSISTANT: Ok, please mention your name.

USER: William Jones.

ASSISTANT: Ok, do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: As per your request, I found a flight for you with single connection. Shall I proceed for booking?

USER: Please reserve.

ASSISTANT: Your ticket is booked with flight number 100 and airline is Southwest.

USER: Thank you.

ASSISTANT: Welcome, have a safe flight.