You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Karen Walker, can you help me to book a flight from PHX to LAS?

ASSISTANT: Sure, may I know your trip dates?

USER: My travelling dates are Apr 23 and 25.

ASSISTANT: Do you need any halt in between journey?

USER: Yes, I need a connecting flight in normal cost airline.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: We found a connecting flight of fare 600 with airline Delta and number is 1001. Can I reserve it?

USER: Yes, proceed with booking.

ASSISTANT: Your ticket has been confirmed in business class.

USER: Thank you.

ASSISTANT: Thank you.