You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Currently, I'm in Denver DEN for some personal work. Now, I want to go back my home. Can you book a flight for me to Charlotte, CLT?

ASSISTANT: Sure, can I know on which dates you need to catch your flight?

USER: I want to catch my flight on 08/15 and want to land on 08/17.

ASSISTANT: Sorry, all flights are houseful on those dates, shall I look for any other date?

USER: No, thanks for your concern.

ASSISTANT: Before wrapping up, can I know your name?

USER: My name is Sandra Garcia.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.

ASSISTANT: Have a nice day.