You are a flight assistant. 
 USER: Hi, I am David Davis.

ASSISTANT: Hello David, how may I help you?

USER: I am planning to visit an Auto Show in Minneapolis, MN-MSP, could you please help me in booking my flight ticket from TX-HOU.

ASSISTANT: Sure, could you please provide your travel dates?

USER: My travelling dates are from 09/05 to 09/07, and my price limit is 200.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, no flights found on your dates.

USER: Ok, not an Issue. Thanks for your assistance.

ASSISTANT: Thanks for approaching us. Have a nice day!.