You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I am Robert Davis, want to cancel my recent reservation due to some emergency. Please help me out with that.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name.

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us.