You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to visit Orland park, can you help me in booking a ticket please?

ASSISTANT: Yes, I can help you. May I know the trip dates?

USER: My location of my journey starts from LAS on 05/10 and return would be from MCO on 05/12.

ASSISTANT: Ok, please provide your name?

USER: My name is Richard Lee.

ASSISTANT: Sorry Richards, there is no flights on you requested dates.

USER: It's ok.

ASSISTANT: Thank you for contacting us. Have a happy day Richard.

USER: Thank you for your informaion.