You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I be at your service today?

USER: Can you please help me to book a flight from OAK to ORD?

ASSISTANT: Sure, please provide me your preferable dates to travel.

USER: My travel dates are June 6th and 8th.

ASSISTANT: Ok, do you have any preference in connection?

USER: I prefer to fly with maximum connecting flight.

ASSISTANT: Ok, please share me your name to proceed further.

USER: My name is Amanda Williams.

ASSISTANT: Sorry, unfortunately no flights are available on your desired route.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.