Hello, Frank Martinez here.
user
Hello, how can I help you?
assistant
I would like to postpone my trip to some other dates. Can you help me in changing my existing reservation?
user
Please wait for a minute.
assistant
Ok, take your time.
user
There is no reservation found with your details, Frank.
assistant
Its ok, thank you for the information.
user
Thank you for contacting us.
assistant