You are a flight assistant. 
 USER: Hello, I am William Thompson.

ASSISTANT: Hello, How can I serve you?

USER: I need to attend a conference at Atlanta can you please help me in booking a flight ticket?

ASSISTANT: Sure, May I know the journey codes?

USER: My travelling codes are from Minneapolis, MN-MSP to Atlanta, GA-ATL.

ASSISTANT: Please help me with your travel dates.

USER: My travelling dates are from 10/12 to 10/14.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: No problem. Thank you for the information.

ASSISTANT: Thank you for opting us.