You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in booking a flight ticket from Los Angeles, LAX to reach Denver, DEN?

ASSISTANT: Sure, I will help you. Please share your planned travel dates.

USER: My journey dates are from Dec 19 to Dec 21.

ASSISTANT: Can I have your name please?

USER: My name is Anthony Carter.

ASSISTANT: Do you need a connecting flight?

USER: I need a lay by in between journey.

ASSISTANT: May I know your class preference?

USER: I prefer only economy class flight.

ASSISTANT: Do you have any other preferences?

USER: I prefer normal cost airlines.

ASSISTANT: May I know your depart and return timings of your journey?

USER: I am ok with any time.

ASSISTANT: Anthony carter, no flights has been found on your preferences.

USER: Ok, that's not a problem. Thanks for your information.

ASSISTANT: Thank you for approaching us.