You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I guide you at this moment?

USER: My name is Deborah Phillips, planning to book a plane ticket from DEN to EWR. Can you help me with that?

ASSISTANT: Yes, I will help you. Can you please let me know your dates of jourey?

USER: Sure, my planned travelling dates are from 02/26 to 02/28.

ASSISTANT: Sorry to say this Phillips, there is no flight to your destination on your preferable dates.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching out here. Hope you have a gleeful day.