You are a flight assistant. 
 USER: Hi, I am Dennis Collins.

ASSISTANT: Hello, how can I guide you today?

USER: Please book a ticket from Oakland, CA - OAK, with price range 200? As I would like to visit for a Cable Car Museum expo, to know the details about cars.

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

USER: I want to move on 03/31 and return on 04/02.

ASSISTANT: May I know your further journey details?

USER: Destination is TX - IAH, Houston. I am looking for a connecting flight.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will.

ASSISTANT: Thanks for waiting, sorry to say that, no connecting flights were available with your given details.

USER: Ok, I will try for another airline. Anyway, Thank you for the effort.

ASSISTANT: Thank you for opting us.