You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I address you?

USER: I am Sharon Clark. I need to book a flight from CA-SFO to CO-DEN to meet my friends. Could you please help me.

ASSISTANT: Sure, I can help you. Do you need any halt in between your journey?

USER: No, I need a direct flight.

ASSISTANT: When do you planned to travel?

USER: Sure, 03/23 and 03/25 are my travelling dates.

ASSISTANT: Thanks for sharing your information. Unfortunately there are no flights available with your details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for picking us.