You are a flight assistant. 
 USER: Hello. I am Melissa Brown.

ASSISTANT: Hello, how may I assist you now?

USER: I would like to book a flight ticket to attend my grandfather burial service in Las Vegas. Can you please help me in booking a flight ticket with fare 1000?

ASSISTANT: Sure, I will help you to book a flight ticket. Please share me your planned journey dates?

USER: My planned dates are 02/27 and 02/29.

ASSISTANT: Please mention your airport codes?

USER: My origin point is PA-PHL and destination code is NV-LAS.

ASSISTANT: Do you need any halt in between the journey?

USER: Yes, I need a halt.

ASSISTANT: Thanks for the information, I found a flight of airline UA, flight number is 1013 and fare is 200.

USER: Ok, continue with the booking.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thank you.