You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: Due to sudden change in my tour plan, I would like to cancel my recent reservation.

ASSISTANT: Sure, may I know your name please?

USER: My name is Emma Baker.

ASSISTANT: Please wait a while, I will check your details.

USER: Sure.

ASSISTANT: Sorry, no reservation had been found on your name.

USER: Ok, no issues.

ASSISTANT: Thank you for choosing us.

USER: Thank you for your help.