You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Nancy Edwards, I am willing to change my reservation. Can you please help me in changing the reservation?

ASSISTANT: Sure, I am glad to help you with that.

USER: Thank you.

ASSISTANT: Please give me a moment to check your reservation status.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Edwards, we couldn't find any reservation on your name in our records.

USER: Not an issue, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us.