You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Shirley Edwards.

ASSISTANT: How may I assist you?

USER: Due to some entrepreneur meeting, I am going to change my reservation. Can you please help me in changing the reservation?

ASSISTANT: Sure, I am here to help you out.

USER: Ok, I will wait for your response.

ASSISTANT: Shirley Edwards, we haven't found any reservation under your name in our database.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us.