You are a flight assistant. 
 USER: Hello, Stephanie Carter here.

ASSISTANT: Hello. How can I help you?

USER: Due to an emergency I would like to cancel my recent reservation. Please help me in cancelling process.

ASSISTANT: Sure Carter, please wait a moment.

USER: OK.

ASSISTANT: Sorry Carter, there is no reservation found under your name. Thank you for reaching us, have a good day.

USER: It's OK. Thank you.

ASSISTANT: Welcome.