You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Frank King here.

ASSISTANT: What can I do in your service?

USER: Please help me out in booking the ticket from LGA to PHX.

ASSISTANT: I would like to know your preferable dates for this journey. Can you please share with me?

USER:  I want to travel on 08/09, and need to catch return flight on 08/11.

ASSISTANT: Please mention your specifications. If you have any.

USER: I need a 1 stopover in between my journey.

ASSISTANT: Sorry for the inconvenience occurred but there are no fights available on your mentioned dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing our services. Have a great day.