You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from MSP to DTW. Could you help me in booking?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are form Jan 23-25.

ASSISTANT: Please share your connection limit.

USER: I need 1 connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer for economy class and I need normal-cost airline.

ASSISTANT: May I know your name?

USER: David Smith here.

ASSISTANT: Sorry, there are no flights found based on your details.

USER: That's ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thank you.