You are a flight assistant. 
 USER: Hello, I am Kevin Baker.

ASSISTANT: Hello, how can I aid you for the day?

USER: Can you please help me with booking a flight ticket from LGA to DCA?

ASSISTANT: Sure, I am here to help you. Can you please share your travelling dates?

USER: My travelling dates are from Dec 21 to Dec 23.

ASSISTANT: Do you need halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no flight found in that route.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.