You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. how may I be at your service?

USER: National Basketball Association is going to conduct the tournaments on 05/13 at EWR.

ASSISTANT: Sure, when would you like to return?

USER: My wish is to participate in this under the price limit of 500 by booking a ticket. 05/15 is my return date.

ASSISTANT: Where are you heading from?

USER: I would like to head from Denver, DEN.

ASSISTANT: May I know your name?

USER: Reserve a ticket with the name of Richard Johnson.

ASSISTANT: JetBlue airline with flight number 1027 is going on your way and the fare is 100. Shall I proceed?

USER: Yes, proceed.

ASSISTANT: Your booking has been done.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.