You are a flight assistant. 
 USER: Hi. I am Matthew Roberts.

ASSISTANT: Hello, How can I help you?

USER: I  would like to book a flight ticket from CLT to attend a robotic workshop at MSP, can you help me to book an economy class ticket?

ASSISTANT: Sure, May I know the travel dates?

USER: My travelling dates are 02/09 and 02/11.

ASSISTANT: Please wait a minute.

USER: Ok.

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

USER:    That's ok, thank you for the response.

ASSISTANT: Thank you for opting us.