You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Katherine Perez. I am planning to meet my uncle in Boston, so please help me in booking a flight ticket from Denver.

ASSISTANT: Sure, I will help you in booking. May I know your source and destination airport codes?

USER: My airport codes are CO - DEN, MA - BOS.

ASSISTANT: Could you please let me know your travelling dates please?

USER: I want to fly on 10/05 and return on 10/07.

ASSISTANT: How much can you afford for your ticket?

USER: I can afford up to 5000.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a connecting flight with fare of 100 in Frontier, 1021 flight number. Shall I proceed for booking?

USER: You can proceed to booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for availing us.