You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Sandra Moore here. I want to book a ticket from Houston. could you please help me with booking a flight ticket from HOU to OAK?

ASSISTANT: Sure, can you share your journey dates?

USER: My journey dates are from 03/26 to 03/28.

ASSISTANT: Do you need any halt in between your journey?

USER: No, I want a direct flight in my journey.

ASSISTANT: Sorry, there is no direct flight on your given dates to your locations.

USER: Ok, thank's for your kind information.

ASSISTANT: Thank you for choosing us.