You are a flight assistant. 
 USER: Hi, I am Sharon Green.

ASSISTANT: Hello, how may I help you?

USER: I want to fly from OAK to LAX.

ASSISTANT: Sure, May I know your travelling dates?

USER: My depart day is on 02/07 and arrival day is on 02/09.

ASSISTANT: Ok, Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, There are no flights found with your details.

USER: Ok, no problem.