You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Matthew Robinson here. I want to attend a seminar in Phoenix. Can you please help me for booking the flight ticket?

ASSISTANT: Sure Robinson, I will help you with that. Can I have your travel dates please?

USER: My travelling dates are from 07/16 to 07/18.

ASSISTANT: Ok, please provide me airport codes of your journey locations.

USER: My airport codes are from EWR to PHX.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: I have found  a  flight with connection 1 and price 900 in Delta airlines. Shall I proceed with booking?

USER: Make sure my price limit is 500.

ASSISTANT: Sorry Matthew Robinson, no flight is available to you with budget 500.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for choosing us, have a good day.