You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Mark Campbell, I want to book a flight from NY-EWR to IL-ORD airport. Can you help me to book a flight ticket?

ASSISTANT: Sure, we are here to help you. Kindly mention your travel dates.

USER: I will fly on 11/11 and return on 11/13.

ASSISTANT: How much can you afford for this journey?

USER: My budget is 200 for flight ticket.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: There is a flight with your requirement, airline is Spirit with price 100 and single connection. Shall I proceed with booking?

USER: Please proceed with booking.

ASSISTANT: Your booking is done and flight number is 1022.

USER: Thank you for helping me with booking.

ASSISTANT: Your booking is done. Thanks for reaching us, have a great day.