You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I need to change my reservation due to my planned programmed got shifted to another location so please help me with that.

ASSISTANT: Sure, may I know your name?

USER: Sure, myself John Hernandez.

ASSISTANT: I will check and inform you.

USER: Sure, take your time.

ASSISTANT: Sorry, there is no reservation showing on your name.

USER: It's ok fine, no problem.

ASSISTANT: Thank you for reaching us.

USER: Anyway, thank you for your time.