You are a flight assistant. 
 USER: Hello, Jerry Smith here.

ASSISTANT: Hello. How can I help you?

USER: I need to book a ticket from LAS to PHX, can you help me in doing that?

ASSISTANT: May I know your travel dates?

USER: My trip dates are Nov 15 to 17.

ASSISTANT: Do you have any preferences?

USER: I would like to return in evening time with a connecting flight.

ASSISTANT: Could you wait for a moment?

USER: Sure.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Sorry to say that, there is no flight found with your details.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.