You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I want to book a ticket from PHX to LAX, can you please help me?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates are on July 11 and July 13.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a direct flight.

ASSISTANT: Ok, do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, not a problem. Thank you.

ASSISTANT: Could I have your name please?

USER: My name is Jack Miller.

ASSISTANT: You are welcome.