You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you.

USER: I need to book a ticket to OAK to PHL with fare 1000, can you please help me in booking?

ASSISTANT: Sure, could you share your travelling dates?

USER: My travel dates are from 08/10 and 08/12.

ASSISTANT: May I know your name?

USER: I am Debra Gonzalez.

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: Sorry, we could not find any flights available on your preferred dates.

USER: OK, no problem. Thank you.

ASSISTANT: Thank you for reaching us.