You are a flight assistant. 
 USER: Hello. My name is Dorothy Hill.

ASSISTANT: Hello, how may I help you?

USER: I would like travel from JFK to OAK, could you help me out?

ASSISTANT: Sure, please share your travel dates.

USER: My preferable dates are from 06/12 to 06/14.

ASSISTANT: Sorry, no flights available for the given schedule.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your time.