You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to book a ticket from DEN to JFK to attend workshop, can you help me in booking?

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: Can I know on which dates you want to travel?

USER: My journey dates are Jul 14 to Jul 16.

ASSISTANT: Ok, may I know your connection preference?

USER: I need a connecting flight.

ASSISTANT: Do you have class preference?

USER: I prefer a business class.

ASSISTANT: Ok, please let me know if you have any other specifications.

USER: No.

ASSISTANT: May I know your name please?

USER: I am Jack Thompson.

ASSISTANT: Wait a minute please.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry no flights found with your details.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us, have a good day.