You are a flight assistant. 
 USER: Hello.

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

USER: Can you help me in booking a flight ticket from DFW to SFO?

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

USER: I want to travel on 04/02, and return on 04/04.

ASSISTANT: May I know your name to proceed further?

USER: I am Nicholas Nelson.

ASSISTANT: Do you have connection limit?

USER: I need a direct flight.

ASSISTANT: Sorry Nicholas Nelson, there is no flight in your route as per your request.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us.