You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: Please help me to book a flight ticket from Denver to attend a live concert in Los Angeles.

ASSISTANT: Sure, we are euphoric to help you.

USER: Thank you.

ASSISTANT: May I know your source and destination airport codes?

USER: My boarding point is DEN and my landing point is LAX.

ASSISTANT: When are you planning to travel?

USER: I want to reach CA on 09/13 and my return date will be on 09/15.

ASSISTANT: Do you need a break in the middle of your way?

USER: Yes, I need a break in between my journey.

ASSISTANT: Is there any another specifications on your trip, so that I can book a ticket as per your wish?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name?

USER: I am Brandon Perez.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: That's ok, I'll choose any alternative to reach my destination. Thank you for your information.

ASSISTANT: Thank you for choosing us.