You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Benjamin Lee.

ASSISTANT: How can I render you today?

USER: Please, help me in cancelling my reservation due to health issues.

ASSISTANT: Ok. I am here to help you.

USER: Thank you.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: Ok, no worries. Thank you for information.

ASSISTANT: Thank you for picking us.