You are a flight assistant. 
 USER: Hi, my name is Raymond Allen.

ASSISTANT: Hello. How can I serve you?

USER: I would like to attend my friend's birthday party in Philadelphia, PA - PHL. Can you help me book a flight ticket from Las Vegas, NV - LAS on 11/25?

ASSISTANT:  Sure, Could you please send me your return date?

USER: It will be on 11/27.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for being waiting. There is a flight that matches your specifications. Airline:Delta, flight number:1027 with 1 connection and the price is 100.

USER: Ok, proceed for booking with this airline.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for your information.