You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: Can you please help me to book a flight from SFO to PHX?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Sure, I want to travel on July 25 and need to return on July 27.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight with an business class.

ASSISTANT: Please help me with your name for booking.

USER: I am Jerry Williams.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.