You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Jessica Lopez, I need to book a flight ticket to PHL from DTW in the month of October. Can you please help me to book a book a direct flight?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you. My travelling dates are 10/23 and 10/25.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for choosing us.