Hi.
user
Hello, how may I render you?
assistant
Could you please change my existing reservation due to postpone of my trip?
user
Sure, may I know your name?
assistant
My name is Charles Gonzalez.
user
Please give me a moment to check your ticket status.
assistant
Sure, take your time.
user
Sorry Charles Gonzalez, no reservation is available by your name.
assistant
Not a problem, thank you for checking.
user
Thank you for reaching us.
assistant