You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Owing to a medical emergency of my cousin I would like to postpone my trip. Can you please help me in cancelling my recent reservation?

ASSISTANT: Sure, please wait for a moment, I will check and revert you.

USER: Ok, By the way my name is Samuel Jackson.

ASSISTANT: We are sorry to notify that, we did not find any reservation with your name.

USER: Ok, no worries. Thanks for your kind information.

ASSISTANT: Thank you for connecting with us. Have a nice day.