You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Baker.

ASSISTANT: How can I help you today?

USER: Can you help me to cancel my existing reservation?

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

USER: Thank you.

ASSISTANT: Just give a moment.

USER: Sure.

ASSISTANT: Sorry, there is no reservation on your name in our database.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.