Hello. My name is Kathleen Phillips.
user
Hello, how may I assist you today?
assistant
I want to change my existing reservation due to an emergency. can you help me in change reservation?
user
Sure, I will help you, please wait  for a minute.
assistant
Sure.
user
Thank you for waiting, no reservation found with given name.
assistant
Ok, No issues. Thank you.
user
Thank you for choosing our airlines.
assistant