You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book ticket from DEN to BOS, can you aid me in booking my ticket?

ASSISTANT: I am glad to help you. May I know your trip dates?

USER: My trip dates are Sep 20th and Sep 22nd.

ASSISTANT: Do you have any connection limit preference?

USER: I need one connection between my trip.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any airline preference?

USER: I am Ok with any airline.

ASSISTANT: Do you have any specific time preference?

USER: No, you can proceed booking.

ASSISTANT: Could you help me with your name please?

USER: Emma Collins.

ASSISTANT: Here I found a connecting flight with Delta Airlines and the airfare is about 100. Shall I proceed with flight 1001?

USER: Proceed.

ASSISTANT: Your ticket is booked for a economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.