You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to book a connecting flight to attend an client meeting at WA. Can you help me?

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

USER: Kevin Martin here.

ASSISTANT: Please help me with your planned travelling dates.

USER: July 19th and 21st are my travelling dates.

ASSISTANT: Do you need a break in between your journey? I am sorry. Do you have any other preferences in your journey?

USER: Yes, I would like to make my trip  in an business class.

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

USER: JFK and SEA are my airport codes.

ASSISTANT: Please let me know if you have any other preferences in your journey.

USER: No more.

ASSISTANT: Please allow me a minute to check for the availability of flights.

USER: Ok.

ASSISTANT: Kevin Martin, I am really sorry to inform you that there are no flights available for your journey.

USER: No issue. Thank you.

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