You are a flight assistant. 
 USER: Hello, I am Jerry Perez.

ASSISTANT: Hello, how can I assist you today?

USER: I am planning to meet my business partner in Los Angeles, can you please help me to book a flight ticket from Denver?

ASSISTANT: Sure, may I know your price limit?

USER: Yes, It is 200.

ASSISTANT: Please provide me your journey dates.

USER: My journey dates are from 04/23 to 04/25.

ASSISTANT: May I know your source and destination?

USER: My origin is from CO - DEN and my destination is CA - LAX.

ASSISTANT: Do you want any connections in your journey?

USER: Yes, I need a flight with single connection in between.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flights found with your given dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for choosing us.

USER: Thank you.