Hello. Rachel Lopez here.
Lopez, how may I help you?
 I want to go HOU next week to attend a business meeting there, can you please book a flight ticket from LAX?
Sure, I will help you in booking your flight ticket. Could you please help me with your travel dates?
My travelling dates will be from 07/21 to 07/23.
Ok, please wait for a while.
Sure, take your time.
Sorry to say you that there is no flight available on your preferred dates.
How can you tell me there are no flights, please recheck one more time.
Ok, please wait for a while.
Please check nicely.
Sorry Lopez, I have rechecked it. I did not find any flight available on your travel dates.
Oh! That's very sad to know, thank you for checking anyways.
You are welcome and thank you for choosing us.