You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me to book a business class flight ticket?

ASSISTANT: Sure, I will help you. Please help me with your name.

USER: I am Edward Mitchell.

ASSISTANT: Please help me with your planned travelling dates.

USER: My travel dates are May 11 and May 13.

ASSISTANT: Do you need a break in your journey?

USER: Yes, I need a break in between my journey.

ASSISTANT: Please help me with your depart and arrival airport codes.

USER: I am comfortable with any timings.

ASSISTANT: Thank you for letting me know. Please help me with your source and destination airport codes.

USER: My airport codes are OAK and JFK.

ASSISTANT: Thank you. Do you have any other preferences in your journey?

USER: Please ensure that I prefer normal cost airline flight ticket.

ASSISTANT: Edward Mitchell, I am really sorry to inform you that there no flights available for your journey.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us. Have a great time.