You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Paul Rodriguez. I would like to book a ticket from DTW to LGA, can you please help me out?

ASSISTANT: Sure, kindly share your travel dates.

USER: I am travelling on these dates May 12th and 14th.

ASSISTANT: Do you have any other specifications?

USER: I prefer departure time in afternoon.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thanks for reaching us.