You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what kind of help you are looking from us?

USER: I want to take care of my ailing mother, so I will not be able to travel on my scheduled date. Can you please help me with rescheduling my reservation?

ASSISTANT: I can help you with that, could you help me with your name please?

USER: My name is Stephen Lewis.

ASSISTANT: Levis, please wait for sometime. I will check your reservation status and let you know your reservation status.

USER: Sure, take your time.

ASSISTANT: Lewis, I have not found any reservation by your name in our database.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.