You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Kathleen Perez. I want to book a flight ticket to DEN from MCO. Can you help me with that?

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

USER: Sure, my travel source date is 07/26 and the return is 07/28.

ASSISTANT: Please give me a moment.

USER: Ok, please take your time.

ASSISTANT: There is no flights found under your preferable details.

USER: That's ok, thank you for helping me.

ASSISTANT: Welcome, have a great day.