You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: Please help me to book a flight ticket from ORD to BOS.

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

USER: My journey dates are from May, 14 to May, 16.

ASSISTANT: Do you need any way station in your journey?

USER: I need  a single connecting flight.

ASSISTANT: Is there any class preference?

USER: I am happy with any class.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Jacob Martin.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: Thank you for your information.

ASSISTANT: Thank you for opting us.