You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you at this moment?

USER: My name is James King, help me to book a flight AUS to DFW to visit Comic-Con with friends.

ASSISTANT: Sure, we are happy to serve you and I need your airborne and recur planned journey dates. Can you please share that one?

USER: I need a flight on 03th Apr and return on 05th Apr.

ASSISTANT: Which type of class that you prefer?

USER: Please provide me any class flight ticket.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Sorry to say that there is no flight that is moving towards your location to book a ticket.

USER: Ok, thank you for the information.

ASSISTANT: You are most welcome and thank you for approaching us.