You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I want to travel from IAD to SFO, can you help me with that?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My trip dates 01/26 and 01/28.

ASSISTANT: Do you have any specification about class?

USER: No, but I need a connecting flight.

ASSISTANT: Please mention your name.

USER: I am Richard Edwards.

ASSISTANT: The United airlines providing an economy class flight with price 200 and the connections 1. Shall I confirm your ticket?

USER: My return time must be in afternoon.

ASSISTANT: The return time is 16:00 hours.

USER: Ok, proceed for booking.

ASSISTANT: Your ticket is booked. The flight number is 1014.

USER: Thank you.

ASSISTANT: Welcome, have a great day.