You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: My name is John Evans. I want to attend for science festivals in Houston, so please book a flight ticket with a price limit of 200.

ASSISTANT: Sure, John Evans. Can you please mention your journey points?

USER: My source and destination airport codes are AZ-PHX, TX-IAH.

ASSISTANT: Fine, please share your planned dates.

USER: My departure day is 11/16, return day is 11/18.

ASSISTANT: May I know your connection limit?

USER: Connections limit is one.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, no flights were available based on your connection limit.

USER: No problem, thanks for your service.

ASSISTANT: Thank you for availing us, have a pleasant day.