You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I be of your assistance today?

USER: I am Katherine Lewis.

ASSISTANT: Ok.

USER: Please book a ticket from Chicago, IL-ORD to Phoenix, AZ-PHX, for shopping.

ASSISTANT: Ok. Can you please share your travel dates?

USER: Depart by 07/13 and return on 07/15.

ASSISTANT: Ok. There is a direct flight to PHX. May I proceed further?

USER: Please provide connecting flight.

ASSISTANT: We could not find a connecting flight. On particular days of your travel.

USER: Please do not book ticket.

ASSISTANT: Thanks for reaching our service.

USER: Thanks for the assistance.