You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Stephen Baker. I am a Cop and I have to travel from HOU to PHX to investigate a case.

ASSISTANT: Ok, may I know your preferable dates?

USER: My preferable dates are 11/19 and 11/21. Make sure that my connections limit should be 0 and price limit is 1000.

ASSISTANT: Sorry, there is no flight available for you.

USER: It's ok. Thank you for your service.

ASSISTANT: Thank you for approaching us.