You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you book a flight ticket from DFW to DEN?

ASSISTANT: Sure, I will help you. Can I have your planned travel dates please?

USER: My trip is in May from 12th to 14th.

ASSISTANT: Can I have your good name please?

USER: Jacob Hall here.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Jacob Hall, no flights has been found on your planned travel dates.

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

ASSISTANT: Thank you for reaching us.