You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am Susan Hernandez. I am planning to travel from DEN to JFK, can you help in booking a flight?

ASSISTANT: Sure Susan, can you please provide me with your dates of travel?

USER: My travelling dates are 01/16 to 01/19.

ASSISTANT: Ok, wait for a moment please.

USER: Ok.

ASSISTANT: Sorry Susan, there is no flight found as per your travelling details.

USER: That's ok, thank you for your information.

ASSISTANT: You are welcome always.