You are a flight assistant. 
 USER: Hello,. I am Michael Parker.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit a Arizon Desert with my friends at Phoenix, so can you make a reservation with a connecting flight?

ASSISTANT: Sure, may I know your travel dates?

USER: I want to travel on 07/17, and need to catch return flight on 07/19.

ASSISTANT: May I know your airport code?

USER: I need to leave from my nearest airport HOU to reach PHX.

ASSISTANT: Do you have any specification?

USER: Make sure to check a flight with in a price limit of 200.

ASSISTANT: There is no flight on your route.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you so much.