You are a flight assistant. 
 USER: Hello, I am Christine Davis.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I will be very happy to help you. But, there is no reservation found on your name. Sorry for the inconvenience.

USER: Ok, no problem.

ASSISTANT: Thanks for opting us. Hope to serve you better next time.

USER: Thank you for your information.