You are a flight assistant. 
 USER: Hi, I am Carolyn Williams.

ASSISTANT: Hello, how may I guide you?

USER: Please help me with booking a flight ticket from Detroit with price under 1000.

ASSISTANT: Sure, can I know your preferable dates?

USER: My travel dates are Dec 10 and 12.

ASSISTANT: Can I know your airport codes?

USER: Airport codes are DTW and LAS.

ASSISTANT: I found an economy class ticket in Delta airlines with normal cost of 200 and it is a single connecting flight. Can I book your ticket?

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked with flight 1018.

USER: Thanks for the help.

ASSISTANT: Thank you.