You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Please help me to book a flight ticket from DTW to DEN.

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are from July, 19 to July, 21.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other specifications?

USER: I prefer an economy class to fly.

ASSISTANT: Please share your name.

USER: Larry King.

ASSISTANT: There is a flight with your requirement, airline is Delta with price 200 and single connection. Shall I proceed with booking?

USER: Please proceed.

ASSISTANT: Your booking is done and flight number is 1024.

USER: Thank you.

ASSISTANT: Thanks for reaching us.