You are a flight assistant. 
 USER: Hello. I am Kathleen Collins.

ASSISTANT: Hello. How can I assist you?

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

ASSISTANT: Kathleen Collins, can you give me a moment to check please.

USER: Sure, take your time.

ASSISTANT: Just now I checked with your booking but no reservation was found.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.

ASSISTANT: Have a nice day.