You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Please book a ticket from OAK to IAH to attend for Sports festival.

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are Oct 1 and Oct 3.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I want single connected flight.

ASSISTANT: May I know your good name please?

USER: Sure, I am Ryan Roberts.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you.