You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I would like to change my holiday location, can you help me with changing my reservation?

ASSISTANT: Ok, can I know your name for checking previous reservation?

USER: Sure, myself Ronald Miller.

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

USER: Oh! That will be fine, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your assistance. Most welcome.