You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Alexander Hall, I want a flight ticket from DC- IAD to CA- SFO.

ASSISTANT: OK Alexander, will you provide your travelling dates?

USER: My planned dates are from 09/11 to 09/13.

ASSISTANT: Please give me a moment.

USER: OK.

ASSISTANT: Thanks for waiting. As per your request the flight is available. The flight number is 1005 with price 200 and the connections 2. Are you OK with this?

USER: Sorry, but I need only one connection.

ASSISTANT: Sorry to say that unfortunately there is no flight is available with 1 connections.

USER: OK. Please don't book this flight ticket. Thank you for your response.

ASSISTANT: OK.Thanks for reaching us.