You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: I need to book a flight ticket from JFK to PHL, Can you please help me for booking?

ASSISTANT: Sure, when are you planning to make your trip?

USER: I would like to travel on 01/23 to return on 01/25.

ASSISTANT: What number of connections do you need?

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: I am comfortable with business class.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: Virginia White.

ASSISTANT: Thanks for providing all your credentials. We regret to inform you that there are no flights available on the dates you requested.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.