You are a flight assistant. 
 USER: Hi, I am Sandra Johnson.

ASSISTANT: Hello, how may I help you?

USER: I would like to book a flight ticket from CA-OAK, can you help me with booking to NY-LGA?

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates would be from 09/08 to 09/10.

ASSISTANT: Ok, please wait a moment. Sorry there is no flights found on your journey details.

USER: Ok, thank you.

ASSISTANT: Thanks for connecting with us. Have a nice day.