You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Christopher Gonzalez here. My wedding has been postponed, so I want to reschedule my itinerary dates.

ASSISTANT: Sure, I am here to help you with this.

USER: Ok.

ASSISTANT: Sorry Gonzalez, there is no reservation found as per your name to reschedule your reservation.

USER: No problem, thank you.

ASSISTANT: You are welcome always.