You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I have an appointment with my client in PHL. Can you please make a reservation from SFO?

ASSISTANT: Sure, we are euphoric to help you.

USER: Thank you.

ASSISTANT: When did you scheduled to travel?

USER: I want to travel on May 28 and need to return on May 30.

ASSISTANT: Do you need any break in your journey?

USER: Yes, I need a break.

ASSISTANT: May I know your depart and arrival time?

USER: I do not have any specifications with timings.

ASSISTANT: Do you have any other requirements?

USER: I prefer an business class to travel.

ASSISTANT: It will be helpful for me, If you share me your good name?

USER: Andrew Johnson here.

ASSISTANT: Sorry to inform you that, there are no flights available with your requirements.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.