You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you now?

USER: Christopher Anderson here. My client meeting has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Ok, may I know your name to check with your booking status?

USER: I mentioned my name.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I am very apologetic to inform you this news, but there is no active reservation found by your name in our agency database.

USER: No problem, thank you.

ASSISTANT: Thank you for approaching our agency, have a nice day.