You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jacob Roberts here.

ASSISTANT: I hope you are good today, how can I help you Roberts?

USER: I would like to cancel my reservation, can you please help me?

ASSISTANT: Sure, I will help you.

USER: Actually I would like to change my reservation. Can you help me?

ASSISTANT: Sure. Please wait a while.

USER: Ok, sure.

ASSISTANT: There is no reservation on your name in our database.

USER: Oh! That's sad to hear from you, thank you for checking anyways.

ASSISTANT: Thank you for opting us.

USER: You are welcome.