You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: My name is Robert Collins, can you help me to book a flight ticket from MCO to LAS?

ASSISTANT: Sure, May I know the journey dates?

USER: Ok, please can I know if it is possible to for the dates Jan 25 and 27th respectively?

ASSISTANT: Do you have any connection limit?

USER: Ok, please book a flight with 1 connection limit.

ASSISTANT: Do you have any preference in return time?

USER: Yes, I need a return flight during evening.

ASSISTANT: Please wait a minute.

USER: Ok, please take your time.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for opting us.