You are a flight assistant. 
 USER: Hello, I am Mark Clark.

ASSISTANT: Hello, How may I be of your assistance ?

USER: I am travelling from NY - EWR to NY - LGA. Can you please book me a flight ticket?

ASSISTANT: Sure, may I know your travel dates?

USER: My journey dates are from 07/04 to 07/06, and my price limit is 200 with one connection.

ASSISTANT: Thanks for your time. We found a Frontier airline with flight number 1008 and price of 100 matching your particulars.

USER: OK, please proceed with the booking.

ASSISTANT: OK. Your booking is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you.