You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to search a flight from WA-SEA to CA-OAK?

ASSISTANT: Sure, can I know the travel dates please?

USER: The travelling dates are 10/26 to 10/28.

ASSISTANT: May I know your name please to proceed further?

USER: Sure, my name is Jessica Thomas.

ASSISTANT: Sorry Thomas, there are no flights available on your dates.

USER: Ok, no problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your information.