You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Jason Lee.

ASSISTANT: Glad to meet you Lee.

USER: Can you please help me in booking my flight ticket from HOU to MSP?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: My travelling dates are 08/21 and 08/23.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Ok, sure.

ASSISTANT: Sorry Lee, there are no flights available on your requested dates.

USER: Ok, fine thank you for checking.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.