You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: My name is Amanda Johnson.

ASSISTANT: Yes, Johnson.

USER: My holiday trip has been postponed, so I would like to cancel my recent reservation.

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found.

USER: That's fine, thank you for your information.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.