You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: My name is Nancy Roberts. I need a flight ticket with a connecting flight. Can you help out me with booking on 12/20?

ASSISTANT: Sure, can you please help me with your airport codes?

USER: I want to go to DTW  for Christmas shopping from HOU.

ASSISTANT: May I know your return journey date?

USER: I intend to return on 12/22.

ASSISTANT: Thank you for your information. A flight with price 100 having single connection in southwest airline was found. Shall I proceed with it?

USER: Ok, You can proceed.

ASSISTANT: Your ticket is confirmed in flight number 1001.

USER: Thanks for your help.

ASSISTANT: Thank you for opting us.