You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I address you?

USER: My name is Raymond and I want to book the flight ticket from SEA to DFW.

ASSISTANT: Sure, I can help you. When would you like to travel?

USER: My travel dates are 04/16 and 04/18.

ASSISTANT: Do you need any stopover?

USER: No.

ASSISTANT: Can I know your full name?

USER: My full name is Raymond Scott.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for approaching us.