You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Robert Parker.

ASSISTANT: How may I support you?

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

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any active reservation on your name in our data.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for contacting us.