You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Can you aid me to book my ticket from BOS to JFK?

ASSISTANT: Sure, May I know your travelling dates?

USER: My trip dates are Jul 13 and Jul 15 respectively.

ASSISTANT: Do you have any connection limit?

USER: I prefer for single connecting flight.

ASSISTANT: Any other preferences?

USER: I prefer to travel in business class and normal cost airlines to travel.

ASSISTANT: May I know your name?

USER: Jessica Walker here.

ASSISTANT: Sorry, There are no flights found with your data.

USER: Thank you for the help.

ASSISTANT: Thank you.