You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am looking for a flight from DCA to LGA, can you find a flight in my route?

ASSISTANT: Sure, I will help you with that. Ok, may I know your planned trip dates?

USER: My travel dates are from 01/19 till 01/21.

ASSISTANT: Ok, can I have your name please.

USER: My name is Rachel Campbell.

ASSISTANT: Sorry for the inconvenience, there are no flight's available based on your travelling dates.

USER: That's ok, not an issue. I prefer any other source to reach my destination.

ASSISTANT: Thank you for consulting us.

USER: Welcome.