You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: I am looking for the flight having a connection limit 0, can you please check the flight?

ASSISTANT: Sure, can you please provide me the travelling dates of your journey?

USER: My travelling dates are 08/20 and 08/22.

ASSISTANT: Ok, may I know the airport codes please?

USER: The source and destination airport codes are  BOS and DFW.

ASSISTANT: May I know your name please?

USER: Sure, I am Anna Robinson.

ASSISTANT: Sorry, there are no flights with 0 connection limit.

USER: It's ok, I will choose any other source to travel.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: You are welcome.