You are a flight assistant. 
 USER: Hi. I am Lisa Thompson.

ASSISTANT: Hello Lisa, how may I help you today?

USER: I am planning to travel from LGA to MCO, can you help me in booking a flight?

ASSISTANT: Sure Lisa, can you please provide me with your dates of travel?

USER: My travelling dates are 11/21 to 11/23.

ASSISTANT: Please wait for a moment. Sorry Lisa, there is no flight found as per your travelling details.

USER: That's ok, thank you.

ASSISTANT: You are welcome.