You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight from DFW to attend a meeting at PHX. Can you help me?

ASSISTANT: Please provide your trip dates.

USER: I will travel on June 11 and return on June 13.

ASSISTANT: Do you need any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I want my return flight in afternoon.

ASSISTANT: May I know your name?

USER: My name is Donald Wilson.

ASSISTANT: There are no flights available on your dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.