You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to visit Chicago, can you please book me a ticket from PHX to ORD?

ASSISTANT: Sure, can I know the travel dates please?

USER: I am planning my journey on the dates of Feb 09 and Feb 11.

ASSISTANT: May I know your name please?

USER: My name is Christopher Thompson.

ASSISTANT: Do you have any requirements?

USER: I would like to depart in the evening flight.

ASSISTANT: Can I know the connection limit please?

USER: I prefer connecting flight.

ASSISTANT: Ok, wait a moment please.

USER: Please book my ticket in business class flight.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for approaching us.