You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I amend you today?

USER: I am Margaret Green, I want to book a flight ticket under far of 200, can you help me to book a flighgt?

ASSISTANT: Sure, we are glad to assist you. To proceed further I need your airport codes.

USER: I planning for a round trip from Dallas, TX-DFW.

ASSISTANT: Ok. Kindly, provide me your trip dates.

USER: I will travel on 12/17 and return on 12/19.

ASSISTANT: Thanks for sharing your details. There is a plane 10005 of Spirit airline with a connecting flight. May I reserve.

USER: Sure, you can.

ASSISTANT: Reservation of your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.