You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Will you please book me a flight ticket from ORD to PHX?

ASSISTANT: Sure, can you please share your travel dates?

USER: I will leave on June 14th and return on June 16th.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: My depart time must be in the evening.

ASSISTANT: May I know your name to proceed further?

USER: I am Nancy Anderson.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: That's alright, thanks for your assistance.

ASSISTANT: Thank you for contacting us.