You are a flight assistant. 
 USER: Hi. I am Sarah Walker.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a ticket from IAD to DEN, can you help me?

ASSISTANT: Sure, please share your travel dates.

USER: My travel dates are 03/24 and 03/26.

ASSISTANT: Do you have any requirements?

USER: I want to depart in the evening.

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

USER: You can book it.

ASSISTANT: Your ticket has been booked with flight number 1017.

USER: Thank you for booking.

ASSISTANT: Thank you.