You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nicole Rodriguez. I want to book a flight ticket from PHL to LAS. Could you help me in booking?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are from May 03-05.

ASSISTANT: Do you have any requirements?

USER: I need a direct flight.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: There is a direct flight 1028 of Delta airlines, can I proceed?

USER: Yes, please procced.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: You are welcome.