You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Mary Hall.

ASSISTANT: How can I help you?

USER: I am looking for a light from LAX to OAK, can you please help me out?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: My travelling dates are Aug 01 and Aug 03.

ASSISTANT: Do you have any specifications?

USER: My departure time is evening.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: That's ok, thank you for checking.