You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I assist you?

USER: As I need to visit Oakland, please book a ticket from Charlotte, NC-CLT to CA-OAK. My name is Laura Martinez.

ASSISTANT: Sure, May I know the travel dates?

USER: Depart date is 09/06 and will return by 09/08.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Thanks for the assistance.

ASSISTANT: Thank you for opting us.