You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Donald Martinez, can you help me to book a flight from PHL for a round trip?

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

USER: My travelling dates are 01/02 and 01/04.

ASSISTANT: Ok, there is a flight 1019 in Delta airline matching your details with price 100. Shall I proceed?

USER: I am fine with that flight, proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: You are welcome.