You are a flight assistant. 
 USER: Hello. I am Mark Lewis.

ASSISTANT: Hello. How may I render you today?

USER: I need to book a ticket to meet my friend on 10/13. Could you please help me in booking a return ticket on 10/15?

ASSISTANT: Sure, please let me know your connection preference.

USER: I need a halt in between the journey.

ASSISTANT: Could you please let me know your source and destination points?

USER: My airport codes are AUS and ORD.

ASSISTANT: Is there any fare limit?

USER: 500 is my price limit.

ASSISTANT: Please wait a moment I will check and revert to you.

USER: Sure.

ASSISTANT: We found an UA airline matching your details with single connection and the flight number-1001.

USER: You can proceed with booking.

ASSISTANT: Your ticket has been processed successfully.

USER: Thank you for booking a ticket.

ASSISTANT: Thanks for approaching us.