You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you with today?

USER: I am Mark Campbell. Actually, I want to book a ticket from IL-ORD to NY-LGA. Can you help me out?

ASSISTANT: Sure, I can help you with that. Mark, can you please help me with your travelling dates?

USER: There are my travelling dates 01/11 to 01/13.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Mark, there is a flight available at your requested dates with price 100. Would you like me to proceed the booking?

USER: Sure, you can proceed.

ASSISTANT: Ok. Your booking is confirmed.Your flight number is 1008 and the airline is AA. Have a great journey.

USER: Thank you for your help.