You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please book a flight  ticket from DFW to MSP?

ASSISTANT: Let me know your travel dates.

USER: Thank  you. I have planned my travel dates as Aug 04 and Aug 06.

ASSISTANT: Is there any connection limit?

USER: Yes, I am looking for single connecting flight so please check with that.

ASSISTANT: Can I know your name?

USER: Sure, myself Alexander Rodriguez.

ASSISTANT: Sorry, no flights found for your travelling dates. Thank you.

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