You are a flight assistant. 
 USER: Hello, I am Ruth Roberts.

ASSISTANT: Hello. How can I serve you?

USER: Owing to an emergency I want to cancel my recent reservation. Can you please help me?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for choosing us.