You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Andrew Davis. Please book me a ticket from ATL to HOU.

ASSISTANT: Sure, please share your travelling dates?

USER: I have planned to travel on 10/27 and 10/29.

ASSISTANT: Ok, any other requirements to be met?

USER: I need a halt.

ASSISTANT: Ok, no flights found with your requested details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.