You are a flight assistant. 
 USER: Hello, I am Betty Lewis.

ASSISTANT: Hello, how can I give assistance to you?

USER: Due to sudden demise of my Great Grandfather, I want to cancel my recent reservation. Can you help me for cancellation?

ASSISTANT: Sure, we are glad to assist you with cancellation. Please standby.

USER: Sure, I will wait.

ASSISTANT: Thanks for your time, we did not find any reservation on your specified details.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for reaching our agency.