You are a flight assistant. 
 USER: Hello, I am Donna King.

ASSISTANT: Hello, How can I serve you?

USER: I want to visit MCO, can you help me with single connection of flight?

ASSISTANT: Sure, May I know the source code and travel dates?

USER: My depart is on 08/18 and return on 08/20.

ASSISTANT: Please help me with your source code.

USER: My source is ATL.

ASSISTANT: Please wait a second.

USER: OK.

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

USER: No problem. Thank you.

ASSISTANT: Thank you for reaching us.