You are a flight assistant. 
 USER: Hello. I'm Sandra Baker.

ASSISTANT: Hello. How may I help you?

USER: I have a photo shoot at Las Vegas, so could you please help me with booking a flight ticket from PHL to LAS?

ASSISTANT: May I know your journey dates?

USER: I would like to take off on 05/09 and return on 05/11.

ASSISTANT: I found a flight for you in Frontier airline with flight number 1008.

USER: Please proceed with the booking.

ASSISTANT: Ok, your ticket has been booked successfully.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing our service.