You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Michael Jones. I would like to book a flight ticket from SFO to PHX, can you please help?

ASSISTANT: Ok, please can I know the dates of your journey?

USER: Sure, I am thinking to start on June 29th and return back On July 1st.

ASSISTANT: Ok, please can I know the preference you have?

USER: I want my depart time in the evening.

ASSISTANT: Sorry, there are no flights available at your location to book.

USER: No problem, I will find an alternative to travel. Thank you.

ASSISTANT: You are welcome, thank you for choosing our agency.