You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I am Dorothy Anderson. I want to give a surprise to my brother by attending his convocation day on 10/08, can you please help me in booking a flight ticket?

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: My return date would be 10/10.

ASSISTANT: What are your airport codes?

USER: I would like to travel from DFW to reach my destination which is ORD.

ASSISTANT: Flight-1002 is available for you, can I book it?

USER: Please proceed with booking.

ASSISTANT: Your booking is done, thank you for reaching us.

USER: Thank you for the quick response in booking.

ASSISTANT: Thank you for reaching us, have a nice day.