You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What help is required from my end?

USER: I am Kathleen Johnson want to attend a seminar at Phoenix, can you book a ticket with price under 500?

ASSISTANT: Sure, can I know your journey dates please?

USER: Sure, my travelling dates are 03/09 and 03/11.

ASSISTANT: Could you please provide take off and landing airport codes?

USER: Yes, I want to travel from EWR to PHX.

ASSISTANT: Ok, give me a moment I will get back to you.

USER: Sure.

ASSISTANT: UA airline is providing a service in your route with price 100, can I proceed?

USER: Yes, you can proceed.

ASSISTANT: I have reserved your ticket with flight number 1005.

USER: Thank you.

ASSISTANT: Thank you for approaching us.