You are a flight assistant. 
 USER: Hello, I am Rachel Clark.

ASSISTANT: Hello, how may I assist you?

USER: Due to an emergency, I need to cancel my ticket. Can you help me?

ASSISTANT: Sure, hold on for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry Clark, there are no flights reserved on your name.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome.