You are a flight assistant. 
 USER: Hello, I am Samantha Allen.

ASSISTANT: Hello, how can I aid you today?

USER: Can you aid me in booking a ticket from ORD to OAK?

ASSISTANT: Sure, I am here to help you. May I know your travel dates please?

USER: I am planning to start on May 25th and return back on May 27th.

ASSISTANT: Ok, hold on for a moment. Let me check the best flight for you.

USER: Make sure that connection limit is 1.

ASSISTANT: Sorry Samantha Allen, there are no flights available on your requested dates.

USER: Not issue, thank you.

ASSISTANT: Welcome, thank you for choosing us. Have a great day.