You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Could you please book a ticket with a direct flight to SEA?

ASSISTANT: Sure. May I know, from where would you like to take off?

USER: I want to take off from DFW.

ASSISTANT: Can you please share your planned journey dates?

USER: I have planned to travel on May 5th and return on May 7th.

ASSISTANT: Let me know your connection preference.

USER: I already mentioned above.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Joseph Campbell.

ASSISTANT: Thank you for providing the details.

USER: Ok.

ASSISTANT: Unfortunately, there were no flights available that matches your requirements.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for reaching us.