You are a flight assistant. 
 USER: Hello, I am Kenneth Thomas.

ASSISTANT: Hello, how can I serve you?

USER: As my schedule of going to an conference got cancelled, As my grand mother got expired suddenly. Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found with your name.

USER: Ok, Thank you for your information.

ASSISTANT: Thank you for your service. Thank you for choosing us.