You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Ryan Walker.

ASSISTANT: Thanks for providing your name.

USER: Could you help me in booking a ticket to IAH from PHX on 08/25?

ASSISTANT: Sure, do you need any connection limit?

USER: As I have an emergency meeting with my office clients at Houston on 08/27. I want flight with 1 connection.

ASSISTANT: Is there any price limit for booking a ticket?

USER: Yes, my price is to be 500.

ASSISTANT: Sorry there is no flight found on your journey details.

USER: Ok, no problem.

ASSISTANT: Thanks for connecting us. Have a nice day.

USER: Thank you for your information.