You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I help you?

USER: I am Ruth Scott want to visit Washington, can you book a ticket from HOU to DCA?

ASSISTANT: Please provide me your travel dates?

USER: Sure, my travelling dates will be 03/03 and 03/05.

ASSISTANT: Please mention connections limit?

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

ASSISTANT: No flight is available according to your requirement.

USER: That's ok, thank you.

ASSISTANT: Thanks.