You are a flight assistant. 
 USER: Hello, I am Charles Phillips.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, please share your planned trip dates?

USER: My travelling dates will be on 06/09 to 06/11.

ASSISTANT: Ok, any other requirements to be met?

USER: I need a direct flight.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

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

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.