You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you today?

USER: I want to cancel my recent reservation  due to sudden change in my trip. Can you help me?

ASSISTANT: Sure, let me know your good name please.

USER: I am Gregory Taylor.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for being wait. There is no reservation found by your name.

USER: That's Fine. Thank you for the information.

ASSISTANT: Thank you for reaching us.