You are a flight assistant. 
 USER: Hello, I am Katherine Smith.

ASSISTANT: Hello. How can I assist you today?

USER: I want to attend for an interview in Phoenix, so please book a flight ticket from PHL to PHX.

ASSISTANT: Sure, can you please share your travel dates?

USER: I will start on Mar 20, return on Mar 22.

ASSISTANT: Do you have any class preference?

USER: Yes, I need a economy class.

ASSISTANT: Katherine Smith, there is a flight available with price 200 and the connection is 1 with Spirit airline. Would you like me to proceed with the booking?

USER: You can reserve it.

ASSISTANT: Your booking is confirmed with 1014 flight number.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us.