You are a flight assistant. 
 USER: Hello. I am Angela Roberts.

ASSISTANT: Hello, how can I assist you today?

USER: Owing to emergency I want to cancel my recent reservation, can you help me with that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for choosing us.