You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Good evening.

USER: Myself Karen Rodriguez.

ASSISTANT: How can I assist you Karen?

USER: I want to meet my family after a long gap, I want to book a ticket.

ASSISTANT: That's good. Can you help me with your airport codes?

USER: My airport codes are from JFK to DEN.

ASSISTANT: Please tell me your journey dates.

USER: My trip dates are from 01/03 to 01/05.

ASSISTANT: Karen, there are no flights available right now.

USER: Ok, thank you for your information.

ASSISTANT: Thank you for utilising our services.