You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amanda Gonzalez.

ASSISTANT: How may I assist you?

USER: I want to change my existing reservation. can you help me out?

ASSISTANT: Sure, I will help you. Please, wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Ok, Not an issue. Thank you.

ASSISTANT: Thank you for approaching us.