Hello.
user
Hello, how may I assist you?
assistant
Myself Charles Baker. Due to some business meeting, I am going to cancel my reservation. Can you please help me for this?
user
Ok. please wait for a while.
assistant
Sure, I will wait for your kind response.
user
Sorry, no flights found with your criteria.
assistant
Not a big issue, anyway thank you very much for your kind service.
user
Thank you for choosing us.
assistant