You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Paul Wilson here.

ASSISTANT: Nice to meet you Paul.

USER: I want to attend a seminar in Charlotte.Can you please help me for booking a ticket?

ASSISTANT: Sure, may I know your travelling complete details please?

USER: My departure date is 06/14 and return date is 06/16. My airport codes are from DC-IAD to NC-CLT.

ASSISTANT: Ok, hold on for a moment please.

USER: Make sure my connections limit is 1.

ASSISTANT: Sorry to say this Paul, there are no flights with single connection.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us. Have a good day.