You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Laura Thomas. Can you please book a flight ticket from MSP to DFW?

ASSISTANT: Sure, I am here to help you with that. Can I know your trip dates?

USER: Thank you. I have planned to travel on dates of Mar 08 and Mar 10.

ASSISTANT: May I know your preference related to connection limit?

USER: I am looking for single connecting flight.

ASSISTANT: Is there any other preferences?

USER: I would like to return in evening time.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to intimate you that, there is no flight which is returning in the evening time on the dates you have given.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: You are welcome. Thanks a lot for reaching us.