You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: I am Ronald Taylor.

ASSISTANT: Please give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry Ronald Taylor, no reservation is available by your name.

USER: Thant's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for contacting us.