You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,how may I assist you today?

USER: I need to book a ticket from ORD to MSP. Could you book a ticket?

ASSISTANT: Sure, can you please mention your travelling dates?

USER: My travelling dates are from Sept, 18 to Sept, 20.

ASSISTANT: May I know your name for further checking with your details.

USER: I am Charles Allen.

ASSISTANT: Do you need any connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Any other specifications to be met?

USER: I prefer to fly in a normal-cost airlines.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with single connection and the price is 100 in United Airlines, can I proceed with the reservation?

USER: Please book a flight.

ASSISTANT: Your ticket has been reserved with the flight number 1014.

USER: Thank you.

ASSISTANT: Thank you for reaching our service.