You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: As my plan to visit my grand parents house got postponed due to heavy rains, I want to change my reservation. Can you please help me with that?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: I am Paul Phillips.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your given name.

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.