You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to visit a trip at Dallas & Fort Worth. Could you please help me with booking a flight ticket from MSP to DFW?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My planned travel dates are May 27 and May 29.

ASSISTANT: Ok, may I know your name?

USER: Sure, Myself Gregory Parker.

ASSISTANT: Do you have any specification?

USER: My depart time should be in the evening time.

ASSISTANT: Sorry, currently no flights are available on your preferable travel dates.

USER: Not an issue, anyway thank you for the information.

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