You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to attend my hand ball game. Can you check the flight availability from MCO to DFW?

ASSISTANT: Sure, please provide me your planned travel dates.

USER: My planned travel dates are 07/10 and 07/12.

ASSISTANT: Do you prefer either economy or business class?

USER: No issues with class but I want a flight with single connection.

ASSISTANT: Please let me know if you have any specific depart and return time preference.

USER: No more, thank you.

ASSISTANT: May I know your name to proceed further?

USER: Sure, William Clark here.

ASSISTANT: We don't have any flight available for your journey criteria.

USER: No issues, thank you for the valuable time.

ASSISTANT: Thank you.