You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Ryan Wilson. Due to sudden change in the dates of summit which was going to be held in the place,so I want to cancel my recent reservation, can you please help me?

ASSISTANT: Sure. Please give me a moment.

USER: Ok.

ASSISTANT: Wilson, there are no active reservations found with your details at this moment.

USER: It's ok. Thank you for your information.

ASSISTANT: Thank you for reaching us.