You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: Can you aid me to book flight ticket from DFW to OAK?

ASSISTANT: Sure, may I know your planned travel dates?

USER: My trip dates are June 24 and June 26.

ASSISTANT: Is there any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: I would like to depart in the morning.

ASSISTANT: May I know your name?

USER: I am Brandon Wilson.

ASSISTANT: Sorry, there were no flights found on your route.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for reaching us.