You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Benjamin Turner here.

ASSISTANT: In what way can I aid you for the day?

USER: Can you please reserve me a flight ticket from PHX to DFW?

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: Please share your planned trip dates.

USER: My trip dates are 06/29 - 07/01.

ASSISTANT: Do you need a non stop flight or a connecting flight?

USER: I need a single connection.

ASSISTANT: Do you have any specifications like class or  with timings?

USER: I prefer to go by business class.

ASSISTANT: Thank you for sharing your details, but there are no flights found with the given class.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.