You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a ticket from LGA to PHX.

ASSISTANT: Sure, may I know the travelling dates?

USER: Depart is on Oct, 3 and return date is Oct, 5.

ASSISTANT: Please help me with your connection limit.

USER: I would prefer direct flight.

ASSISTANT: Do you have any other requirements?

USER: I prefer business class.

ASSISTANT: May I know your name?

USER: I am Mark Wilson.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, no flights found with your chosen dates.

USER: Thank you.

ASSISTANT: Thank you for opting us.