You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am looking for a flight for a flight from ORD to PHX, can you please help me in booking?

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: I will start my journey on Mar 27 and return back on Mar 29.

ASSISTANT: Ok, please share your name.

USER: My name is Ruth Walker.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any specification?

USER: I want to return in afternoon.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.