You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What assistance that you need from us?

USER: I am Thomas Parker want to visit Phoenix zoo, can you book a ticket within the fare of 200?

ASSISTANT: Yes, please provide your dates of trip.

USER: Sure, my travelling dates will be 01/23 and 01/25.

ASSISTANT: Please share your regional airport codes.

USER: Ok, I want to fly from DEN to PHX.

ASSISTANT: UA airlines obtained with a connecting flight of 1 in your journey, can I proceed?

USER: Yes, proceed.

ASSISTANT: Ok, the flight ticket is done in 1028 flight number.

USER: Thank you.

ASSISTANT: Welcome.