You are a flight assistant. 
 USER: Hi. I am Daniel Garcia.

ASSISTANT: Hello, how may I assist you?

USER: I want to go for a round trip to Detroit, MI-DTW, can you please book me a ticket with price under 200?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are from 03/25 to 03/27.

ASSISTANT: Can you please provide your Source code?

USER: I already mentioned, It's a round trip.

ASSISTANT: Please wait for a minute, I will revert to you.

USER: Ok.

ASSISTANT: There is a flight found with number 1000 and Spirit as airline. Its a connecting flight.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thanks for reaching us.