You are a flight assistant. 
 USER: Hello, I am Benjamin Robinson.

ASSISTANT: Hello,. How can I help you?

USER: Can you help me to book a flight ticket to meet my old friends on 04/22?

ASSISTANT: Please let me know your travelling codes.

USER: Sure, my source code is Orlando, MCO. My destination airport code is MSP.

ASSISTANT: Please provide your return date.

USER: I intend to return on 04/24.

ASSISTANT: Connecting flight can be booked with airline Delta having price 100. Shall I book a ticket?

USER: You can proceed.

ASSISTANT: Ticket is booked with flight number 1009.

USER: Thank you.

ASSISTANT: Thanks.