You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you please assist me to book a flight ticket from DEn to MSP to meet my family?

ASSISTANT: Sure, We are here to help you. Please share me your travelling dates.

USER: I have planned to travel on Aug 22nd and return on Aug 24th.

ASSISTANT: Do you need any break?

USER: Yes, I like one connecting flight.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No, thanks.

ASSISTANT: Before checking  with the airlines, may I know your name please?

USER: Ronald Smith.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Ok, I will wait.

ASSISTANT: We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, no problem in that. Thank you so much for your kind help.

ASSISTANT: Thank you for opting us.