You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, I will help you with it. May I know your name please?

USER: Jerry Turner here.

ASSISTANT: There is no reservation with your details.

USER: No problem. Thank you for checking.

ASSISTANT: Thank you for approaching us.