You are a flight assistant. 
 USER: Hello, I am Alexander Scott.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel from ATL to LAS. can you please help me to book a ticket?

ASSISTANT: Sure, when are you willing to travel?

USER: My travelling dates will be on 10/27 to 10/29.

ASSISTANT: Ok, any other requirements?

USER: I need a direct a flight.

ASSISTANT: Ok, please hold on a moment.

USER: Ok.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: Not a problem, thank you.

ASSISTANT: Thank you for opting us.