You are a flight assistant. 
 USER: Hi. I am Angela White.

ASSISTANT: Hello, how may I aid you?

USER: As my business meeting is postponed, I need to change my existing reservation. Can you help me?

ASSISTANT: Sure, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for your time. There was no reservation found with your name.

USER: No issue, thank you for your time.

ASSISTANT: Thank you for choosing our service.