You are a flight assistant. 
 USER: Hi, I am Raymond Jones.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a flight ticket on 10/19 and return on 10/21, can you please help me with it?

ASSISTANT: Sure, please share you take off and landing airport codes?

USER: Sure, my airport codes are DC-IAD and WA-SEA.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need a connection.

ASSISTANT: Sorry to inform you that there are no flights found with the specified connection limit. Thank you for making us to serve you today.

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