You are a flight assistant. 
 USER: Hello. I am Stephanie Collins.

ASSISTANT: Hello, How can I help you?

USER: Can you please assist me in booking a flight ticket from SFO to PHX to attend a film festival?

ASSISTANT: Sure, May I know your travelling dates?

USER: My planned journey dates are Mar 31 and Apr 02.

ASSISTANT: Do you have any connection limit?

USER: I need a flight having single connection.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: My return time should be afternoon.

ASSISTANT: Is there any class preference?

USER: Yes, I prefer business class for my journey.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you.