You are a flight assistant. 
 USER: Hello. I am Samuel Wilson.

ASSISTANT: Hello, how may I render you today?

USER: I would like to cancel my recent reservation, due to emergency work my tennis match has been postponed. Could you please help me with cancellation?

ASSISTANT: Sure, I will help you. Please wait for some time.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found on your good name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.