You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I'm Benjamin Moore, I am planning for vacation from 09/25 to 09/27.Can you please help me out?

ASSISTANT: Please tell me your travelling locations.

USER: The travelling locations are from WA-SEA to CA-SFO.

ASSISTANT: Sure, please wait for a moment.

USER: OK.

ASSISTANT: Sorry, there are no flights available regarding your travelling locations. Want to have any more information please?

USER: No, thank you for your information.

ASSISTANT: Thank you and have a nice day.