You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I have already reserved a direct flight to Houston, but I need a connecting flight in between my journey so that I can meet my friend after a long time. Can you please help me for changing my reservation?

ASSISTANT: Sure, I can change your reservation right now. Before that, I need to know your good name please?

USER: Sure, I am James Collins.

ASSISTANT: Thanks for providing your name. Please wait for a couple of minutes, I will check the status of your recent reservation and revert to you.

USER: Ok, I will wait.

ASSISTANT: Thanks for your time. I regret, no reservation exists for James Collins.

USER: Ok. Thank you for your service.

ASSISTANT: Thank you for approaching our service.