You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How may I render you at this moment?

USER: Please book a ticket from Denver, CO-DEN to Los Angeles, CA-LAX.

ASSISTANT: Sure, please share your travelling dates?

USER: My travelling dates are from 01/26 to 01/28.

ASSISTANT: Ok, do you need any halt in between the journey?

USER: Yes, I need a halt.

ASSISTANT: Can I know your good name please?

USER: I am Jonathan Nelson.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There are no flights found on your requested dates.

USER: Thanks for your help.

ASSISTANT: Thank you for availing us.