You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Can you help me to book a flight ticket from DCA to LGA?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: Ok, please can I get the flight on my dates of journey Apr 4th and Apr 6th?

ASSISTANT: May I know your name to proceed further?

USER: Ok, please book a ticket on the name Charles Robinson.

ASSISTANT: Do you have connection limit?

USER: I need a direct flight please.

ASSISTANT: Sorry Charles Robinson, there is no flight in your route.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.