You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Robert Evans here, I want to reserve my ticket from AUS to ORD, can you please help me in this?

ASSISTANT: Sure, can I know the travel dates please?

USER: Sure, my preferable dates of journey is from 08/02 to 08/04.

ASSISTANT: Ok, wait a moment please.

USER: Sure, but please make sure that the price limit is 200.

ASSISTANT: There is a flight in Spirit airline with price 200, can I book it?

USER: Ok, please book it.

ASSISTANT: Your ticket has been booked with flight number 1002.

USER: Thank you for your help in reserving my ticket.

ASSISTANT: Thank you for approaching us.