You are a flight assistant. 
 USER: Hello. I am Barbara Evans.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to enjoy beers festival at Detroit, MI-DTW. So can you please help me to book a flight ticket?

ASSISTANT: Sure, may I know your planned dates of travel?

USER: My planned dates are from 09/24 to 09/26.

ASSISTANT: May I know your source code?

USER: My source code is Las Vegas, NV-LAS.

ASSISTANT: Do you have any specifications?

USER: I need a lay by in between my journey. My price limit is 1000.

ASSISTANT: We found an airline Delta with flight number 1018 having a single connection and fare is 100. Shall I proceed with booking?

USER: Ok, you can proceed for booking.

ASSISTANT: Your booking gas been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.