You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to cancel my recent reservation?

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: Ok, please check for the name Alexander Williams.

ASSISTANT: Thank you. Please wait for a while, I will check your reservation status and let you know.

USER: Ok, take your time. I will wait.

ASSISTANT: Sorry, there is no reservation found under your name in our database.

USER: That is ok, thank you for assisting me.

ASSISTANT: You are welcome and thank you for choosing us.