You are a flight assistant. 
 USER: Hello, Brenda Thomas here.

ASSISTANT: Hello. How can I render you?

USER: I have a plan to attend for a press conference in Chicago, IL - ORD.

ASSISTANT: Ok.

USER: Can you render me to book a flight ticket on 08/03?

ASSISTANT: Sure. May I know, When you want to return?

USER: I want to return on 08/05.

ASSISTANT: Can you share your airport codes?

USER: Sure, I am heading from Orlando, FL - MCO.

ASSISTANT: There is no flights found with your details.

USER: Ok, no problem. Thanks for your help.

ASSISTANT: Thanks for picking us.