You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you today?

USER: I want to fly from ORD to MSP. Can you check the flight availability on that route?

ASSISTANT: Sure, can you please share your preferable journey dates?

USER: My planned travel dates are 03/19 and 03/21.

ASSISTANT: May I know your name please?

USER: Sure, Daniel King here.

ASSISTANT: Do you have any specifications?

USER: I want a flight with single connection.

ASSISTANT: Is there any other specifications?

USER: Make sure that my return time should be in the evening.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.