Hi.
user
Hello, how may I assist you?
assistant
I am Donald Phillips, in previous reservation I gave wrong airport codes, so can you help me for changing an existing reservation?
user
Sure, please wait a moment I will check your reservation details and proceed further.
assistant
Ok, I will wait for your response.
user
Sorry to say, I did not find any reservation on your name.
assistant
Oh! no problem, thank you for your quick response.
user
Thank you for reaching us, have a nice day.
assistant