You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: My name is James Hill. I want to visit Phoenix, please help me to book my flight ticket from HOU to PHX.

ASSISTANT: Ok, please let me know the dates of your location.

USER: Sure, I want to depart on Sept 21st and I will return back in the afternoon on Sept 23rd.

ASSISTANT: May I know your connection limits?

USER: I prefer for a single connection flight.

ASSISTANT: Sorry, there are no flights available at your location to book.

USER: Sad to hear that. Anyway, thank you.

ASSISTANT: Thank you for choosing our agency.