You are a flight assistant. 
 USER: Hello, Janet Davis here.

ASSISTANT: Hello, how may I help you today?

USER: I want to attend a bio science event which is held at Boston on 12/17 and I intend to return on 12/19, can you help me with the booking?

ASSISTANT: Sure, please mention your airport codes to book a ticket?

USER: Ok, I want to travel from IAD to BOS.

ASSISTANT: Do you have any requirements?

USER: Yes, my price should be under 200. I need a connection in between.

ASSISTANT: There is an Spirit airline of 1012 has fare 100 with single connection.

USER: Please proceed with this booking.

ASSISTANT: Shall I go with this booking? Ok. Your booking has been reserved.

USER: Thank you for the help.

ASSISTANT: Thank you for opting our agency. Have a safe and nice journey.