You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: I am Katherine Thomas. I am looking for a flight from Philadelphia, can you book the flight ticket from PHL to EWR?

ASSISTANT: Sure, can I know your preferable dates?

USER: My travel dates are from June 20th till June 22nd.

ASSISTANT: I found an economy class ticket in Spirit airlines with normal cost of 100 and it is a single connecting flight. Can I book your ticket?

USER: Please proceed with it.

ASSISTANT: Your ticket is booked with flight 1018.

USER: Thank you for your help.

ASSISTANT: Thank you.