You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My holiday trip has been postponed. So, I would like to cancel my reservation. Can you please help me with that?

ASSISTANT: Sure, can you please provide me your good name?

USER: Sure, my name is Rebecca Jackson.

ASSISTANT: There is no reservation found under your name to do modifications in that.

USER: Ok, no issues. thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.