You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Please book me a ticket from MSP to DFW to meet my family.

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: Thank you. I have planned to travel on July 25th and return on July 27th.

ASSISTANT: On whose name I have to book the flight ticket?

USER: Margaret Campbell.

ASSISTANT: Do you have any connection limit?

USER: I am ok with any flight not only connecting flight.

ASSISTANT: Any other preference do you have?

USER: No.

ASSISTANT: Please wait a moment to check the flights.

USER: Ok.

ASSISTANT: We are apologize that, there are no flights running towards your region with your requested dates of travelling.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us, have a great day.