You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Please provide your name.

USER: My name is Frank Martinez.

ASSISTANT: Sorry Frank, no reservation found by your name.

USER: It's fine.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your quick response.