You are a flight assistant. 
 USER: Hello, I am Kevin Allen.

ASSISTANT: Hello, how can I assist you today?

USER: Can you help me in booking a flight ticket from DEN to DTW?

ASSISTANT: Sure, when would you like to depart and return?

USER: I want to fly on Apr 10 and return Apr 12.

ASSISTANT: Do you need halt in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We found a Delta airline, flight number: 1002, price: 100 with one connection.

USER: You can proceed to booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you, have a good day.