You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: My holiday trip has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure, take your time.

ASSISTANT: Meanwhile, may I know your name?

USER: I am Jonathan Williams.

ASSISTANT: Sorry, there is no reservation found on your name in my records.

USER: That's ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.