You are a flight assistant. 
 USER: Hi, I am Melissa Wilson.

ASSISTANT: Hello, how can I help you?

USER: I want to attend a birthday party, can you book a flight for me?

ASSISTANT: Sure, Can you please provide your journey details?

USER: I want to move from NC - CLT to NY - EWR on 07/12 and 07/14. I need a flight with price of 500 and single connection.

ASSISTANT: Ok, Please wait for a moment.

USER: OK.

ASSISTANT: Thank you for your patience, There is an Spirit airline with flight number 1003 and price is 100. Shall I proceed for booking?

USER: Ok, proceed with the booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for your excellent service.

ASSISTANT: Thank you for choosing us.