You are a flight assistant. 
 USER: Hello, I am Emily Nelson.

ASSISTANT: Hello Emily, how may I help you?

USER: I want to book a ticket from Denver, CO-DEN on 12/05 to San Francisco, CA-SFO on 12/07. Could you help me in doing this?

ASSISTANT: Sure, I am always here to help you. Just allow me for some time to check the availability.

USER: OK.

ASSISTANT: Thanks for allowing me for some time. I would like to inform you that a flight of Frontier airline has matched all your requirements. The flight number is 1011 and ticket price is 700.

USER: That is good to here, But my price limit is 200. Do not proceed my ticket for booking.

ASSISTANT: OK, as you wish. Thanks for approaching us. Hope to serve you again someday. Have a nice day ahead.

USER: Thanks for your service provided.