You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Ryan Walker. I would like to visit Phoenix to meet my friend, can you please help me in booking?

ASSISTANT: Sure, I will help you to book a flight. Can you please provide me your travelling dates?

USER: My trip dates are from 03/31 till 04/02.

ASSISTANT: Ok, may I know your airport codes?

USER: My airport codes are from SFO to PHX.

ASSISTANT: Give me a moment.

USER: I need a direct flight in my journey.

ASSISTANT: Sorry, there is no flight is available for you with 0 connection.

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

ASSISTANT: Welcome. Thank you for choosing us.