You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Susan Scott here.

ASSISTANT: How can I help you?

USER: Can you please book me flight from BOS to DCA?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my travel dates are from Oct 27 to Oct 29.

ASSISTANT: Do you have any price limit for booking your ticket?

USER: I need a flight ticket within the pirce 5000.

ASSISTANT: Do you have desire for any particular class?

USER: No, I am ok with any class.

ASSISTANT: May I know about your connection limit?

USER: I need a single halt in between my journey.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there is no flight available as per your requirements.

USER: That's ok, no problem. I will consult another agency to reach my destination. Thank you for the information.

ASSISTANT: Thanks for your patience.