You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please book a flight ticket to reach New York city under the name of Dorothy Johnson?

ASSISTANT: Sure. Can I know your travelling dates?

USER: Sure, I would like to travel on dates of 11/19 and 11/21.

ASSISTANT: Ok, can I know your travelling airport codes?

USER: Sure, airport codes are SEA and JFK.

ASSISTANT: Flight 1015 of Spirit airlines matches with your preferences, can I proceed?

USER: That's great. Please proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you, have a great day.

USER: Most welcome.