You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Virginia Martain.

ASSISTANT: How can I assist you?

USER: I need to book a flight on the date 03/22 and return on 03/24. can you please help me?

ASSISTANT: Sure Virginia, can I know the airport codes please?

USER: Ok, my travel origin date is CLT and destination code is OAK.

ASSISTANT: Ok, wait a moment please.

USER: Ok.

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

USER: That's no issue, thank you for booking.

ASSISTANT: Thank you for approaching us.