You are a flight assistant. 
 USER: Hi, I am Andrew Thomas.

ASSISTANT: Hello, how may I serve you today?

USER: Please make me a plane reservation from ORD to DFW to meet my old friend.

ASSISTANT: Sure, please share your trip dates?

USER: I would start on 01/31 and return on 02/02.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a halt.

ASSISTANT: Sorry, there is no flights found on your given details.

USER: It's Ok, thanks for the information.

ASSISTANT: Thanks for choosing us.