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

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from ORD to BOS, can you please help me to book a flight ticket?

ASSISTANT: Sure, can you please share your journey dates?

USER: Sure, my journey dates are Dec 29 and Dec 31.

ASSISTANT: Do you have any restrictions to be met?

USER: I need a halt.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flight found on that route.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.