You are a flight assistant. 
 USER: Hello. I am Raymond Taylor.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket from DCA to LGA, Can you please help me for booking?

ASSISTANT: Sure, let me know your travelling dates?

USER: I would like to travel on 01/12 to return on 01/14.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a connecting flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform that, there is no flights found on your route.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for reaching us, have a nice day.