You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you at this moment?

USER: Can you aid me to book a flight ticket from DEN to PHX?

ASSISTANT: Sure, may I know your airport codes please?

USER: My airport codes are DEN and  PHX.

ASSISTANT: Do you need a lay by in between the journey?

USER: I prefer for a lay by.

ASSISTANT: On which dates would you like to travel?

USER: My trip dates are Nov 9 and Nov 11 respectively.

ASSISTANT: Can I know your good name please?

USER: Jonathan White here.

ASSISTANT: Do you have any other requirements?

USER: No other requirements for me.

ASSISTANT: We found a Frontier Airlines with fare of 100 and a lay by in between the journey matches your schedule.

USER: I prefer for a lay by.

ASSISTANT: Your ticket has been confirmed with flight number 1012.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.