You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket from ORD to BOS?

ASSISTANT: When are you planning your trip?

USER: There is a plan to travel on the dates Feb 1st and Feb 3rd respectively.

ASSISTANT: May I know your name please?

USER: My name is Ryan Robinson.

ASSISTANT: Is there any other specification's regarding your journey?

USER: Yes, I need a business class flight which has a single connection limit.

ASSISTANT: Do you have any other criteria?

USER: No.

ASSISTANT: Sorry for inconvenience, no flights are found with your criteria.

USER: Ok, that is not a problem. Thank you for providing the information.

ASSISTANT: Thank you very much for contacting our agency.