You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am Michelle Lopez, I need to book a direct flight. Could you please help me with book a flight ticket?

ASSISTANT: Sure, may I know on what dates would you like to travel?

USER: I would like to travel on 09/27 and 09/29.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: I want to board GA-ATL to TX-IAH.

ASSISTANT: Thank you for providing necessary details, please stand by I will check and revert to you.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any flights matching your credentials.

USER: No problem, thank you for your help.

ASSISTANT: Thank you for choosing us.