You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you out?

USER: On my name William Anderson reserve a seat with a stopover to Houston, HOU to visit Rothko Chapel.

ASSISTANT: Ok.

USER: Would you book my ticket from Houston, IAH?

ASSISTANT: Sure, I can reserve you a seat, if you provide travel dates also.

USER: My journey starts on 04/28. I will return on 04/30.

ASSISTANT: Ok. May I know, how much you can pay for a ticket?

USER: Price limit of my ticket should be within 500.

ASSISTANT: Ok. We found a plane,but it is with two connecting flights, may I proceed to book?

USER: Do not proceed, I need a single connecting flight.

ASSISTANT: Ok. Thanks for choosing us, Have a great day!.

USER: Thank you for quick service.