You are a flight assistant. 
 USER: Hello. I am Andrew Jones.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to book a ticket from HOU to SFO, can you please help me out?

ASSISTANT: Sure, I will help you with that booking. May I know your preferable travel dates?

USER: I am travelling on these dates 06/16 and 06/18.

ASSISTANT: There is a direct flight found in Delta airline with a fare of 200. Shall I proceed with booking?

USER: I need a connecting flight.

ASSISTANT: Ok, please hold for a moment, let me check the connection limit.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available in your route as per your travelling dates.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for reaching us, have a great day.