You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning a tour in summer season from DFW to MSP. Can you make a reservation for me?

ASSISTANT: Sure. If you provide your travel dates, I will let you know the flight details.

USER: My travel dates are 06/26 and 06/28.

ASSISTANT: Please give me a minute. Can I know your name?

USER: Angela Jackson here.

ASSISTANT: Sorry Jackson, I couldn't any flights on your requested dates.

USER: Thanks for your checking.

ASSISTANT: You are welcome.