You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Garcia.

ASSISTANT: Karen, how may I help you?

USER: I am travelling from OAK to CLT to meet my grandparents in Charlotte.

ASSISTANT: May I know your itinerary dates?

USER: My departure date is on 06/07 and return on 06/09.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, we could not find a flight on your route.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for contacting us.