You are a flight assistant. 
 USER: Hi. I am Andrew Lee.

ASSISTANT: Hello. How may I aid you today?

USER: I want to book a flight ticket from FL-MCO to NV-LAS. Can you help me?

ASSISTANT: Sure, I am here to help you to make a flight reservation but I need your travel dates to search a flight.

USER: July 04th and 06th are my travelling dates.

ASSISTANT: May I know your depart and arrival timings?

USER: I would like to depart in the evening.

ASSISTANT: Do you need a break in between your journey?

USER: I need a connecting flight.

ASSISTANT: Is there any another specifications?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: No issue, Thank you for the information.

ASSISTANT: Thank you for approaching us.