You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me to book a flight from PHL to LAS?

ASSISTANT: May I know your travel dates?

USER: I want to travel on June 10 and need to return on June 12.

ASSISTANT: Do you prefer connecting flight?

USER: Yes, I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Stephen Parker here.

ASSISTANT: We found a flight in an economy class with 1 connection in Delta airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: Ok, Please proceed.

ASSISTANT: Your booking is done with flight number 1021.

USER: Thank you.

ASSISTANT: Thank you for reaching us.