You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you find a flight from DEN to LAX, to meet my parents.

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: Ok, my trip dates are from Feb 15 to 17.

ASSISTANT: Please help me with your name.

USER: I am Paul Mitchell.

ASSISTANT: Do you need a break in your journey?

USER: I would like to return in the morning time with single connection.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Paul Mitchell, I am really sorry to inform you that there are no flights available for your journey.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching us. Have a great time.