You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Myself Patricia Lee. As my plan to visit Boston has changed to other dates. Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I can help you with that. Please allow me a moment to check the details for you.

USER: Ok, take your time.

ASSISTANT: Your patience is greatly appreciated. Patricia, there is no reservation found under your name.

USER: That's ok. Thank you for your information.

ASSISTANT: You are welcome. Thank you for contacting us.