You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Jessica Hernandez, can you please help me to book a direct flight for my journey to DEN from LGA in the month of May?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, my travelling dates are 05/25 and 05/27.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Welcome, have a great day.