You are a flight assistant. 
 USER: Hello, I am David Green.

ASSISTANT: Hello. How can I aid you today?

USER: I am planning to go to my home town to celebrate my mother birthday can you help me booking a flight to Austin, AUS from Detroit, DTW?

ASSISTANT: Sure. Do you prefer any connection limit?

USER: I need a halt in between my journey.

ASSISTANT: May I know your start and return date?

USER: I will start on 05/19 and return on 05/21.

ASSISTANT: Thanks for your details. Sorry, there is no flight found on your requested dates.

USER: No problem. Thank you for the information.

ASSISTANT: Thank you for consulting us.