You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nancy Carter. I would like to enjoy my beach holidays at Denver, CO - DEN. Can you please book a ticket from LAS?

ASSISTANT: Sure, we are here to help you. Kindly, mention your journey dates.

USER: My preferable dates of journey are 09/21 and 09/23.

ASSISTANT: Do you have any specifications?

USER: I need a way station. Price should not exceed 500.

ASSISTANT: Can I reserve your seat?

USER: Please provide flight details?

ASSISTANT: You have a flight with airline Southwest and flight number is 1002 with 1 connection and price is 100.

USER: Please reserve it.

ASSISTANT: Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.