You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My name is Donna Young. I want to book a flight ticket from DC - DCA to MN - MSP, please help me with that.

ASSISTANT: Sure, let me know your travelling dates.

USER: My trip dates are from 09/10 to 09/12.

ASSISTANT: Please share your specifications.

USER: I need a halt in between my journey.

ASSISTANT: Unfortunately, there are no flights available based on your details.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.