You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I assist you?

USER: I am Gary Thompson want to visit Washington, can you book a ticket from DFW to IAD?

ASSISTANT: Sure. Please provide your journey dates?

USER: Sure, my travelling dates will be 01/02 and 01/04.

ASSISTANT: Please mention connections limit?

USER: Ok, I need a flight with 1 connection.

ASSISTANT: No flights found according to your requirement.

USER: That's ok, thank you.

ASSISTANT: Thank you.