You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Could you please book a ticket from MSP to DCA.

ASSISTANT: Sure, we are here to help you. Kindly share your travel dates.

USER: Travelling dates are from July, 15 to July, 17.

ASSISTANT: Do you have any connection limit?

USER: I would prefer connecting flight.

ASSISTANT: Is there any other specifications?

USER: I prefer business class.

ASSISTANT: Please share your name.

USER: I am Margaret Wright.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Thanks.