You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jerry Campbell here. Can you please book a flight ticket from DFW to MCO?

ASSISTANT: Ok, please provide your trip dates to go.

USER: Sure, I would like to travel on dates of 01/18 and 01/20.

ASSISTANT: There is no flight for you Jerry.

USER: It's ok fine. Thank you for your time.

ASSISTANT: Welcome, have a nice day.