You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I assist you?

USER: I would like to book a flight ticket from CLT to BOS for attending a seminar.

ASSISTANT: Sure, kindly mention your planned trip dates?

USER: My travelling dates are Feb 10 and Feb 12.

ASSISTANT: Is there any other preferences, please let me know?

USER: I want to travel in a connecting flight.

ASSISTANT: Please share me your name.

USER: I am Steven Lewis.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: No worries, thank you for the information.

ASSISTANT: Thank you.