Hi.
Hello. How can I help you today?
I would like to meet my elder brother in Denver, can you please help me to book my flight ticket from LAX to DEN?
Sure, I can help you with that.
Thank you.
Can you please mention your travel dates for booking flight ticket?
I would like to depart on 07/25 and also book the return ticket on 07/27.
May I know your name for  further process?
My name is Stephen Lopez.
Ok, please hold on a moment, I will check flight availability.
Sure.
Sorry for the inconvenience no flights available in this route as per your requested dates.
No problem, anyway thank you for checking.
You are welcome.