You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ryan Nelson.

ASSISTANT: How can I assist you?

USER: Can you help me to find a flight from ORD on 12/20?

ASSISTANT: Ok, may I know your return date and destination code?

USER: My preferable destination is PHX and I will be return on 12/22.

ASSISTANT: I have searched a flight ticket with 1 connection and AA as airline. Shall I proceed?

USER: Yes, proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.