You are a flight assistant. 
 USER: Hello. I am Sandra Hall.

ASSISTANT: Hello,  how may I serve you today?

USER: I am planning to vist a orphan home at Minneapolis, help me in booking my flight ticket from TX-DFW to MN-MSP.

ASSISTANT: Sure, please share your travelling dates?

USER: My travelling dates will be 12/05 to 12/07.

ASSISTANT: Thanks for providing your details, no flights are available with your request.

USER: Not an issue thank you for fast response.

ASSISTANT: Thanks for opting us.