You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me to book flight ticket from BOS to MSP?

ASSISTANT: Sure, please share your journey dates?

USER: My journey dates are Dec 22 and Dec 24.

ASSISTANT: Do you have any specifications?

USER: I prefer a connecting flight which departs in the evening.

ASSISTANT: Is there any class preferences?

USER: I am comfortable with any class.

ASSISTANT: May I know your good name?

USER: Sharon Roberts here.

ASSISTANT: We found a flight in Frontier airlines, flight number is 1018 with single connection and price is 100 economy class, departure flight time at evening 23:00 hours. Shall I proceed?

USER: Please proceed for this flight.

ASSISTANT: Your ticket has been booked.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.