You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, may I know your name?

USER: Myself Edward Robinson.

ASSISTANT: Please wait for a moment to check your details.

USER: Ok, I will wait.

ASSISTANT: Sorry to say, no reservation found on your name. Thank you for reaching us.

USER: Thanks for your information.