You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I need to book a flight ticket from LGA to BOS, can you help me in booking a flight ticket?

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: Sure, my journey dates are May 9 and May 11.

ASSISTANT: Please help me with your name.

USER: Sure, Catherine Harris here.

ASSISTANT: Do you need a break in between your journey?

USER: I prefer maximum one connection.

ASSISTANT: Do you have any other preferences in your journey?

USER: I would prefer return time at afternoon.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: No more preferences, you can proceed further.

ASSISTANT: We have a connecting flight operated by Frontier Airlines with a fare of 200 only. Shall I book the flight ticket?

USER: Yes you can.

ASSISTANT: I have booked your ticket in flight-1004. It departs at 12:00 and arrives at 17:00 hours.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us. Have a great time.