You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Williams Carter. I have to visit San Francisco SFO from Phoenix PHX. Can you find a flight ticket for me?

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

USER: Ok, my itinerary dates are on Mar 27 and back on Mar 29.

ASSISTANT: May I know your journey timings?

USER: Yes, I want to return in the afternoon time.

ASSISTANT: Do you have any other requirements?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: Sorry to say, no flight is available for you.

USER: Ok, not an problem. Thank you for your information.

ASSISTANT: Thank you for opting us.