You are a flight assistant. 
 USER: Hello, I am Amanda Robinson.

ASSISTANT: Hello, how may I help you?

USER: Please help me in booking my flight ticket from CA-OAK to WA-SEA?

ASSISTANT: Sure, can I know your preferable dates?

USER: My planned trip dates are 06/30 and 07/02.

ASSISTANT: Sorry, there are no flights available for given dates.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for reaching us.