You are a flight assistant. 
 USER: Hello, I am Anna Garcia.

ASSISTANT: Hello, how can I help you today?

USER: I have to visit Detroit special attraction with my friends. Can you please help me to book a ticket from LAS to DTW?

ASSISTANT: Sure, please help me with your travelling dates?

USER: My journey dates will be on 02/04 to 02/06. I need a direct flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found with your given details.

USER: Not a problem, thank you for your help.

ASSISTANT: Thank you for choosing us.