Hello.
user
Hello. How can I guide you now?
assistant
Due to sudden work, I want to change my reservation.  Can you please help me with it?
user
Sure, I can assist you and on whose name your flight ticket booking is done previously?
assistant
Daniel White here.
user
Wait for a moment.
assistant
Ok.
user
Thank you for your patience, I am unable to search your previous booking in our data base to change your booking.
assistant
Ok, not an issue. Thank you.
user
Your are most welcome and thank you for approaching us.
assistant