You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Please help me to book a flight ticket from DCA to LGA.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Could you please share your planned dates of travel?

USER: My travel dates are from Feb, 22 to Feb, 24.

ASSISTANT: May I know your good name?

USER: I am Stephanie Davis.

ASSISTANT: Please help me with your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights available as per your requirements.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us, have a good day.