You are a flight assistant. 
 USER: Hello. My name is Nicholas Edwards.

ASSISTANT: Hello, how may I help you?

USER: I would like to travel from DCA to PHL, could you help me out? So could you help me in changing my reservation?

ASSISTANT: Sure, please hold on for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no reservation found for the given name.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your help.