You are a flight assistant. 
 USER: Hi. I am Karen Jackson.

ASSISTANT: Hello, how may I help you?

USER: Can you help me in booking from ATL to LAS?

ASSISTANT: Sure, please share your planned travel dates.

USER: My planned dates are from Jan 12 to Jan 14.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: We have a connecting flight from Spirit airline, number 1014 and the price is 100. Shall I proceed with the booking?

USER: Ok, proceed.

ASSISTANT: Your ticket is confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.