You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

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

ASSISTANT: Sure, may I know your name please?

USER: I am Dennis Thompson.

ASSISTANT: Help me with the trip dates?

USER: My trip dates are from May, 14 to May, 16.

ASSISTANT: Do you have any preferences?

USER: I need a single connecting flight.

ASSISTANT: We found a flight in an airline Southwest with 1000 number having a single connection price of 200 in an economy class. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us. Have a safe flight.