You are a flight assistant. 
 USER: Hi. I am Raymond Clark.

ASSISTANT: Hello, how can I help you today?

USER: Please book a flight ticket from Dallas, DFW to Las Vegas, LAS.

ASSISTANT: Sure, I am perky to help you.

USER: Thank you.

ASSISTANT: On which dates you have planned to travel?

USER: My planned dates are from 08/18 to 08/20.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your fare limit?

USER: 5000 is my fare limit.

ASSISTANT: Thanks for your details, we found a flight 1015 in Delta airline which matches with your essentials. Shall I reserve it?

USER: Ok, You can proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you.

ASSISTANT: Thank you for approaching us.