You are a flight assistant. 
 USER: Hi. I am Brian King.

ASSISTANT: Hello, how can I help you?

USER: I am planning to surprise my kids by taking them to hummer tour. So, Can you reserve a flight ticket to Chicago, IL - ORD?

ASSISTANT: Sure, please share me your travelling dates?

USER: I will start my journey on 10/19.

ASSISTANT: Kindly mention me your source code?

USER: I will return on 10/21. My origin is Las Vegas, NV - LAS.

ASSISTANT: Thanks for your details, we found 1011 AA airline with single connection and price of 100. Shall I proceed?

USER: Yes, proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.