You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Perez.

ASSISTANT: How can I serve you?

USER: I need to book a ticket to Philadelphia, PHL to meet my friend, can you please assist me in booking?

ASSISTANT: Sure. Do you have any price limit?

USER: My price limit is 200.

ASSISTANT: Let me know your trip dates.

USER: My trip dates are from 02/20 to 02/22.

ASSISTANT: May I know your source code?

USER: My source is at Las Vegas, NV-LAS.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: There is a flight with airline: Delta, flight number:1010, price 200, 1 connection. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you.