You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

USER: I am Paul Roberts. Owing to an emergency I had to request you to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, please wait a while.

USER: Ok.

ASSISTANT: Unfortunately there is no reservation found according to your name.

USER: No problem, thank you for your response.

ASSISTANT: Thank you for picking us.