You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to travel from MCO to LAS, could you help me out?

ASSISTANT: Ok, may I know your travelling dates?

USER: My preferable dates are from 01/04 to 01/06.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Sorry, no flights found on your route. May I know your name?

USER: My name is Scott Wilson.

ASSISTANT: Ok, thank you.

USER: Thank you.