You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have a plan for holiday vacation, but due some problem I want to postponed my trip. Help me to change my reservation.

ASSISTANT: Sure, may I know you name?

USER: My name is Laura Jackson.

ASSISTANT: Sorry to inform that no reservation is found with your name.

USER: Thank you for helping me.

ASSISTANT: Thank you, for connecting with us.