You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I would like to attend my brother's wedding at Orlando, could you please help me to book my flight ticket from LAS to MCO?

ASSISTANT: Sure, could you please mention with your dates of journey?

USER: I would like to depart on Jan 18th and return back on Jan 20th.

ASSISTANT: Please mention your name?

USER: My name is Melissa Carter.

ASSISTANT: Are you looking for any other help from my side please?

USER: No.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to say, that there is no flight found as per your travelling details.

USER: Oh! Not an issue, I will find an other way to reach my destination. Anyway, thank you for the information.

ASSISTANT: You are welcome.