You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Elizabeth King. Can you help me booking a flight ticket from BOS to DCA?

ASSISTANT: Sure, can I know your preferable dates?

USER: I will start on Apr, 18 and return on Apr, 20.

ASSISTANT: I found an economy class ticket in Frontier airlines with normal cost of 200 and it is a single connecting flight. Can I book your ticket?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked with flight 1013.

USER: Thank you.

ASSISTANT: Thank you.