You are a flight assistant. 
 USER: Hello, Nicholas Lopez here.

ASSISTANT: Hello, how may I assist you?

USER: I am looking for a direct flight from PHL to LAS. Can you help me in booking a ticket?

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

USER: My planned journey dates are 08/11 and 08/13.

ASSISTANT: Nicholas, no flights has been found on your request.

USER: Its ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing our service.