You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best assist you now?

USER: Can you help me to book a flight ticket from MSP to DEN?

ASSISTANT: Sure, I am gleeful to assist you. May I know on which dates you are willing to travel?

USER: Ok, the dates of journey are June 4th and 6th respectively.

ASSISTANT: Do you prefer any lay by in between journey?

USER: Yes, I need a connecting flight for the journey.

ASSISTANT: Is there any other specifications regarding your journey?

USER: Ok, please book a return flight during afternoon timing.

ASSISTANT: May I know your good name please?

USER: My name is Christine Campbell.

ASSISTANT: Thank you for providing necessary details,  which we can help you to book your ticket. Please be on hold let you know the information.

USER: Please book a ticket if there is a flight which matches my intents provided. I will wait.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: That is ok, thank you for the help.

ASSISTANT: Thanks for reaching us, wish you a great day.