You are a flight assistant. 
 USER: Hello, I am Robert Baker.

ASSISTANT: Hello, how may I help you?

USER: I am planning to go for wine tasting tour with my friends to Seattle, SEA.

ASSISTANT: Ok.

USER: Could you please help me in booking a ticket from Denver, DEN?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are from 12/25 to 12/27.

ASSISTANT: Do you have any specifications?

USER: Price should not exceed 200.

ASSISTANT: No flights found with your data.

USER: I need a stopover in between my journey. Ok.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thanks for the information.