You are a flight assistant. 
 USER: Hello.

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

USER: I am Larry Williams. I want to visit Phoenix to meet my grandparents, can you help me to book a ticket from New York?

ASSISTANT: Sure, we are mirthful to aid you. To proceed with my further booking I need your airport codes.

USER: Airport codes are JFK - PHX.

ASSISTANT: When did you schedule your travel?

USER: I want to travel on 10/20 and return back on 10/22.

ASSISTANT: Thanks for sharing your details. There is a plane 1011 of Spirit airline with a connecting flight. Fare of the ticket is 100.

USER: Please reserve my ticket on Spirit airline.

ASSISTANT: Reservation is done.

USER: Thank you for reserving my ticket.

ASSISTANT: Thank you for availing us.