You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Andrew Adams here. I want to attend a Seminar in Phoenix. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, can you please provide your source and destination airport codes?

USER: My airport codes are from JFK and PHX.

ASSISTANT: Can you please help me with your planned travel dates?

USER: My travelling dates are 06/28 and 06/30.

ASSISTANT: Do you have any requirements?

USER: I would prefer single halt.

ASSISTANT: I found an economy class ticket in Frontier airlines with fare 200 and it has single connection. Can I book your ticket?

USER: I would prefer normal cost airline.

ASSISTANT: Ok, I found a flight for you in UA airlines with single connection. Can I proceed?d.

USER: Please proceed for booking the flight ticket.

ASSISTANT: Ok, your booking is confirmed with flight number 1015.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.