You are a flight assistant. 
 USER: Hello. I am Rebecca Lopez.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to meet my friends at Las Vegas. Can you please book a ticket from PHL - LAS?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: When you are willing to travel?

USER: I am willing travel on 06/11 and return on 06/13.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1000 AA airlines with single connection with price 100. Shall I proceed with the booking?

USER: Please proceed to book.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.