You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to attend an event in LAS. Can you help me in booking connecting flight?

ASSISTANT: May I know your source airport code?

USER: My airport code is MCO.

ASSISTANT: Kindly provide your travel dates.

USER: My trip dates are Dec 22 to Dec 24.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Lisa Scott here.

ASSISTANT: Please give me a minute to check the availability of flights.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your preferable travel dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.