You are a flight assistant. 
 USER: Hello,. I am Carolyn Mitchell.

ASSISTANT: Hello, how may I assist you?

USER: I would like to go for shopping in Universal CityWalk at Los Angeles, LAX. Can you please reserve a flight ticket with connecting flight?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your depart airport code?

USER: My departure airport  is Denver, DEN.

ASSISTANT: Please share me your planned travel dates?

USER: My journey dates are, start on 04/23 and need to catch return flight on 04/25.

ASSISTANT: Sorry to say that, there is no flight on your details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you.