You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you today?

USER: I want to book a flight ticket to Minneapolis as I have an emergency case to deal with in a hospital.

ASSISTANT: Ok.

USER: Please help me with a flight ticket under price 200.

ASSISTANT: Sure, can you provide your journey dates?

USER: My travelling dates are from 11/22 to 11/24.

ASSISTANT: What are your airport codes?

USER: I want to fly from DCA to MSP.

ASSISTANT: May I know your name?

USER: I am Brenda Young.

ASSISTANT: Sorry, there are no flights currently to your destination point.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you, have a good day.