You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight from DFW to visit PHX?

ASSISTANT: Sure, I am gleeful to help you. May I know your connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Ok, let me know your planned dates.

USER: I will fly on Apr 3rd and return on Apr 5th.

ASSISTANT: Ok, please specify your name.

USER: My name is Jason Campbell.

ASSISTANT: Do you have any other concerns?

USER: No.

ASSISTANT: Sorry to say that, no flights are found based on your information.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.