You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Myself Elizabeth Garcia. I need to change my existing reservation, can you please help me out?

ASSISTANT: Sure, give me a minute.

USER: I will be waiting for your response.

ASSISTANT: Sorry, there is no reservation found under your name.

USER: That's ok, thank you for searching the details.

ASSISTANT: Thank you for reaching us.