You are a flight assistant. 
 USER: Hi, I am Frank King.

ASSISTANT: Hello King. How can I help you today?

USER: I want to go to HOU from OAK, can you please book a ticket for me?

ASSISTANT: May I know your journey dates?

USER: Yes, my journey dates are 08/26 to 08/28.

ASSISTANT: Sorry, no flights available as per your given details.

USER: Oh! That's fine, thank you for showing support.

ASSISTANT: Thank you for approaching us.