You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me to change my reservation to next week?

ASSISTANT: Yes, can you share me your name?

USER: Sure, my name is Rebecca King.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for reaching us.