You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Betty Edwards.

ASSISTANT: How may I aid you now?

USER: I want to book a flight ticket from Las vegas to Los Angeles to submit my research record in Pierce university.

ASSISTANT: Ok.

USER: Can you please help me in booking a ticket?

ASSISTANT: Sure, I would be happy to help you. Please let me know your airport codes?

USER: I would like deviate from NV-LAS to CA-LAX.

ASSISTANT: I need your journey dates to proceed further.

USER: My departure date is 07/17 and arrival date is 07/19.

ASSISTANT: Do you need  a halt?

USER: Yes, I need a halt.

ASSISTANT: Thanks for the details, there is a connecting flight available with fare 100. Flight number is 1000 in Delta airline.

USER: You can continue with the booking.

ASSISTANT: Your ticket was confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.