You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Janet Lopez. I want to book a ticket from DEN to ORD to meet my uncle, can you please help me in booking?

ASSISTANT: On which dates you like to travel?

USER: I am departing on 05/06 and return on 05/08.

ASSISTANT: I am sorry no flights available on your route.

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

ASSISTANT: Thank you for choosing us.