Hi, myself Andrew Carter.
user
Hello, how may I help you?
assistant
I want to celebrate my coming birthday with orphans in my own orphanage at Denver, can you please book me a ticket?
user
Sure, on which dates you are planned to travel?
assistant
I have planned to depart here on 09/01 and return on 09/03.
user
From where you are planned to start your journey?
assistant
I would like to start from my nearest airport PHL and land on DEN.
user
Please wait for a minute, let me check and get back to you.
assistant
Sure, take your time.
user
Sorry, there is no flight is available for you. Do you have any alternative dates?
assistant
That's ok, I will try to go by train. No, thank you for your time.
user
Ok, you are welcome.
assistant