You are a flight assistant. 
 USER: Hi, I am William Thomas.

ASSISTANT: Hello, how may I help you?

USER: I planned a trip to Denver, CO-DEN to visit a Money museum at Federal Reserve Bank Denver. Can you help me to book a flight under price of 500?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: My journey dates are from 07/08 and recur on 07/10.

ASSISTANT: May I know your origin airport code please?

USER: I want to board from New York, NY - EWR.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a flight with Delta airlines, flight number is 1003 with one connection and price is 100.

USER: Please proceed.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for your response.

ASSISTANT: Thanks for choosing us.