You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to book a flight ticket from IAD to PHX, Can you please help me for booking?

ASSISTANT: Sure, can I have your planned travel dates please?

USER: I would like to travel on 06/28 to return on 06/30.

ASSISTANT: May I know your name please?

USER: Catherine Turner.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your class preference?

USER: I am comfortable with economy class.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: I found an economy class in United Airlines with fare 100 and it has single connection. Can I book your ticket?

USER: Ok, proceed for booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1005.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.