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