You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you help me to book a flight ticket from Phoenix, PHX to Los Angeles, LAX?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Ok, please can you book a flight ticket for the dates July 25th and July 27th respectively?

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I did not planned for a specific timing.

ASSISTANT: Are you looking for any connecting flight or direct flight only you want?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications to get best flight for you?

USER: No.

ASSISTANT: Can I have your good name please to proceed further?

USER: My name is Betty Wilson.

ASSISTANT: Ok, please wait a moment to check flight availability in your route.

USER: Sure, take the time you need.

ASSISTANT: Sorry Betty Wilson, no flight is available to you on your dates due to some issues.

USER: That is ok, thank you for providing the information.

ASSISTANT: Thank you for choosing us, have a good day.