You are a flight assistant. 
 USER: Hello, I am Steven Williams.

ASSISTANT: Hello, how may I aid you today?

USER: I want to celebrate my cousin birthday at Houston, TX - HOU. Can you please help me with book a ticket from Atlanta, GA - ATL?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Could you please mention your depart and return dates?

USER: Sure, my depart day is on 11/12 and return is on 11/14.

ASSISTANT: Do you need any stopover in between the journey?

USER: Yes, I need a stopover in between my journey.

ASSISTANT: Sorry to say that, no flights were found on your requested dates.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.