You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Can you help me to book a flight ticket from ORD to DEN?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling on these dates please?

USER: I will start on Nov, 2 and return on Nov, 4.

ASSISTANT: Can I know your name please?

USER: My name is Janet Hernandez.

ASSISTANT: Do you need any specifications?

USER: I am looking for connecting flight.

ASSISTANT: Can I know your other preferences?

USER: No more specifications.

ASSISTANT: Sorry, there are no flights found in our database.

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

ASSISTANT: Thank you for reaching us.