You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: I am Charles Lewis. Owing to an emergency, I need to cancel my reservation. Can you help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there was no reservation found with your name.

USER: Ok, no issues. Thanks for your kind assistance.

ASSISTANT: Thank you for opting us.