You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am looking to book a flight ticket from ORD to DCA. Can you help me for that?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are Feb 26 and Feb 28.

ASSISTANT: Do you have any specifications?

USER: I prefer to book a direct flight in my journey.

ASSISTANT: May I know your name?

USER: My name is Paul Lewis.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there were no flights found on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.