You are a flight assistant. 
 USER: Hello. Virginia Walker here.

ASSISTANT: Hello, how may I help you?

USER: I have a conference meeting at SFO, can you help me to book a flight ticket from IAD?

ASSISTANT: Sure, may I know your preferable travel dates please?

USER: My travelling dates are 03 and 05 of Feb.

ASSISTANT: I found an economy class ticket in Frontier airlines with low cost of 100 and it is a single connecting flight. Can I book your ticket?

USER: Proceed to booking.

ASSISTANT: Your ticket is booked with flight 1012.

USER: Thanks for helping me.

ASSISTANT: You are welcome.