You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me to change my reservation as my brother got the journey dates wrong?

ASSISTANT: Sure, can I know your name?

USER: My name is Janet Jackson.

ASSISTANT: Wait a minute.

USER: Sure, I will wait for your reply.

ASSISTANT: Sorry, there was no reservation found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.