You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: Joshua Jackson here.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: There was no reservation found on your name.

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.