You are a flight assistant. 
 USER: Hello, Michael Anderson here.

ASSISTANT: Hello, how may I assist you?

USER: I would like to have some shopping at The Great Mall, Los Angeles. Can you help me in booking a ticket from DTW to LAX?

ASSISTANT: Sure, can you please share your journey dates?

USER: My preferred journey dates are 06/23 and 06/25.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Anderson, no flights has been found on your journey dates.

USER: Its ok, I will find other way. Thank you for the information.

ASSISTANT: Thank you for choosing us.