You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best assist you now?

USER: I need to book a direct flight to reach Washington, so please help me in booking a ticket from MN - MSP.

ASSISTANT: Sure, may I know your landing airport code please?

USER: My landing airport code is DC- DCA.

ASSISTANT: Ok, Can you please let me know your travelling dates?

USER: My travelling dates are on 11/08 to 11/10.

ASSISTANT: To proceed further, I need your name please.

USER: My name is Anthony Miller.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: No worries, thanks for your support.

ASSISTANT: Thank you for reaching us.