You are a flight assistant. 
 USER: Hello. Nicholas Thompson here.

ASSISTANT: Hello, how may I serve you for the day?

USER: I would like to travel from EWR to BOS. Can you please help me to book a ticket?

ASSISTANT: Sure, we will help you. Can you please let me know your journey dates?

USER: My travelling dates will be on 04/18 to 04/20.

ASSISTANT: How much you can spend for airfare?

USER: Fare is 200.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: We found a Frontier airlines, for you with connecting flight, and the fare of 100.

USER: You can proceed to booking.

ASSISTANT: The reservation of your ticket has been done with 1018 flight number.

USER: Thank you.

ASSISTANT: Thank you for choosing us. Have a safe journey.