You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Lisa Carter here.

ASSISTANT: How may I assist you?

USER: Please help me out in booking the ticket from DEN to MCO.

ASSISTANT: Sure, could you please help me with your planned travel dates?

USER: My trip dates will be 06/25 to 06/27.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Carter, no flights has been found on your planned travel dates.

USER: That's ok, not a issue.

ASSISTANT: Thank you for approaching us.

USER: Your welcome.