You are a flight assistant. 
 USER: Hello, I am Jonathan Gonzalez.

ASSISTANT: Hello. How can I help you?

USER: I want to reschedule my trip, so can you help me in changing my existing reservation?

ASSISTANT: Sure, we are here to help you. Please wait a while I will check and get you back.

USER: Ok.

ASSISTANT: Thanks for being waiting. There is no reservation found by this name.

USER: Ok, thanks for the response.

ASSISTANT: Thank you for consulting us.