You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that?

ASSISTANT: Sure, May I know your name for the cancellation process/.

USER: My name is Joshua Wilson.

ASSISTANT:  Sorry, no reservation found on your name to cancel.

USER: No problem, thank you for checking.

ASSISTANT: Welcome, thank you for reaching us.