You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello. How may I help you?

USER: I am Elizabeth White. I want to go for a round trip in Las Vegas, NV - LAS. Can you help me in booking flight ticket?

ASSISTANT: Sure, I will help you. May I know your planned trip dates?

USER: My trip dates are 05/02 - 05/04.

ASSISTANT: Do you prefer a halt in between your journey?

USER: I need a halt.

ASSISTANT: Thank you for sharing the details, wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting, Delta airline flight is running on your route with fare 100 and single connection. Shall I reserve your ticket with this flight?

USER: You can reserve it.

ASSISTANT: Your ticket has been reserved with flight number 1023.

USER: Thank you for your service.

ASSISTANT: Thank you for opting us.