You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am looking for a flight from LAX to PHX, can you help me out?

ASSISTANT: Ok, please can I know your dates?

USER: My trip dates are from Dec 19th till Dec 21st.

ASSISTANT: Can I know your specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please let me know your name to book?

USER: Myself David Martin.

ASSISTANT: Ok, there is a flight 1012 for the airfare 100 and the connection limit is 1. Can I book a economy class flight?

USER: I am looking for an economy class flight.

ASSISTANT: Ok, the flight ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for choosing our agency.