You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service?

USER: Jacob Roberts here, I want to change my reservation. Can you please help me with it?

ASSISTANT: Sure, I will definitely help you in this. Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for contacting us.