You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. thank you for connecting with us. How can I help you?

USER: I planned to visit Houston, I want to book a ticket from SFO to HOU.

ASSISTANT: Ok, please tell your travelling dates?

USER: I would like to travel on 09/09 and return date on 09/11.

ASSISTANT: Can I know your name please?

USER: Sure, my name is Samuel Moore.

ASSISTANT: There is a direct flight available with your request. Shall I book your ticket?

USER: Sorry, I want the flight with 1 connection.

ASSISTANT: Sorry, there are no flights available with 1 connection.

USER: Ok, no problem.

ASSISTANT: Thank you and have a nice day.

USER: Thank you for your information.