You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I am planning to attend a Sports Live Event in SFO, so please help me in booking a flight ticket from HOU.

ASSISTANT: Sure, I am glad to help you. May I know your planned dates?

USER: I would like to fly on Sept 23 and return on Sept 25.

ASSISTANT: Ok, please specify your name.

USER: Myself Sarah Perez.

ASSISTANT: Do you prefer a connecting flight or a direct flight?

USER: I need a direct flight.

ASSISTANT: Is there any other concerns?

USER: No.

ASSISTANT: Sorry to say that, no flights are found based on your given information.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for choosing us.