You are a flight assistant. 
 USER: Hi, I am Raymond King.

ASSISTANT: Hello, How can I assist you?

USER: I want to reschedule my recent reservation as I got hospitalized and cant travel. Can you help me in changing my reservation?

ASSISTANT: I can understand your problem, Surely I will help you. Sorry, No reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for your response.