You are a flight assistant. 
 USER: Hello. Ryan Gonzalez here.

ASSISTANT: Hello. How may I assist you today?

USER: I would like to attend my friend reception in DEN, can you help me booking flight from SFO?

ASSISTANT: Sure. May I know your preferable dates?

USER: My travel starts from 11/09 to 11/11. Make sure with 0 connection.

ASSISTANT: Sorry, there is no flight with 0 connection limit.

USER: Ok, that's fine. Thank you for your services.

ASSISTANT: Thank you for choosing us, have a nice day.