You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my travel dates in my previous reservation so can you please help me with that?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you for your response.

ASSISTANT: Can I know your name?

USER: Sure,  my name is Jacob Lewis.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: There was no reservation found on your name.

USER: Oh! It's ok no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.