You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I would like to book a flight ticket from BOS to ORD to meet my childhood friends. Could you please help me with booking a flight ticket?

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are Apr 27 and Apr 29.

ASSISTANT: May I know your airline preference?

USER: I prefer a normal cost airline.

ASSISTANT: Can you please tell me your connection limit?

USER: I want a direct flight.

ASSISTANT: May I know your name to proceed further?

USER: I am Donald Harris.

ASSISTANT: Here is a direct flight with fare 300 and 1027 as flight number and provided ticket in United airline. Shall I proceed with booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us. Have a nice day.