You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I address you today?

USER: Can you please help me to cancel my recent reservation due to sudden demise of my great grand mother?

ASSISTANT: Sure, on which name your ticket has been reserved?

USER: I am Mark Roberts.

ASSISTANT: Just wait for a while.

USER: Sure.

ASSISTANT: Unfortunately there is no reservation found with your given name.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for connecting with us.