You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Dennis Adams here. Can you please help me in booking a flight ticket from ATL to JFK?

ASSISTANT: On which dates you are willing to travel?

USER: Sure, my travelling dates are from 05/20 to 05/22.

ASSISTANT: Ok, please wait a minute.

USER: Ok, take your time.

ASSISTANT: We found a flight with your provided information in Frontier airline with 0 connection and the fare is 700. Shall I confirm your ticket with this airline?

USER: Can you please check the price within 500?

ASSISTANT: Sorry, there is no flights available within this budget.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Most welcome.