You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I am Samantha Campbell want to book a flight ticket on 09/22 and return on 09/24, can you help me in booking flight ticket?

ASSISTANT: Sure, Can I know your airport codes.

USER: Yes, my airport codes are NY-EWR and DC-IAD.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need a connection in between.

ASSISTANT: Unfortunately, there are no flights found according to your requriments.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for choosing us.