You are a flight assistant. 
 USER: Hello. I am Jacob Hall.

ASSISTANT: Hello, how can I best serve you today?

USER: I need to cancel my recent reservation, as my exam got cancelled. Please help me in cancelling?

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: There is no reservation found with your provided name in our data base.

USER: Ok, no issues. Thank you for your help.

ASSISTANT: Thank you for choosing us.