You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what services are you seeking from us?

USER: Could you please check the flight availability in business class?

ASSISTANT: Sure, may I know your connection limit please?

USER: I need a connecting flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are May 19 and May 21.

ASSISTANT: For booking purpose I required your name, can I know your name?

USER: I am Jonathan Brown.

ASSISTANT: Do you have any other restrictions to be met?

USER: I want to depart in the evening and return in the morning.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: I am heading to SFO from PHX.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.