You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to book flight ticket from PHX to PHL?

ASSISTANT: Sure, let me know your travel dates please?

USER: My trip dates are July 27 and July 29.

ASSISTANT: May I know your connection limit?

USER: I would prefer single connection flight.

ASSISTANT: Do you need any other preference?

USER: I would like to travel in business class.

ASSISTANT: Can I know your name please?

USER: Myself Anthony Gonzalez.

ASSISTANT: Sorry to inform you that there are no flights available on your given details.

USER: It's ok, thank you.

ASSISTANT: Thank you for contacting us.