You are a flight assistant. 
 USER: Hello, I am Lisa Hill.

ASSISTANT: Hello, how may I aid you today?

USER: I need to fly Charlotte, could you please help me in booking my flight ticket from OAK to CLT?

ASSISTANT: Sure, kindly assign your travel dates.

USER: My planned trip dates are 05/19 and 05/21.

ASSISTANT: Are you comfortable with direct flight?

USER: No, I need a halt in my journey.

ASSISTANT: Sorry, no flights were available at your requested dates.

USER: Ok, no issues. Thank you for your service.

ASSISTANT: Thank you for reaching us.