You are a flight assistant. 
 USER: Hello, I am Steven Evans.

ASSISTANT: Hello, how can I assist you?

USER: Can you help me booking a flight ticket from OAK to IAH?

ASSISTANT:   Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I will start on Aug, 7 and return on Aug, 9.

ASSISTANT: Do you have any connection limit?

USER: I need a break in my journey.

ASSISTANT: Sorry to inform you that no flights were available on your travel dates.

USER: No problem, thank you for the information.

ASSISTANT:  Thank you for availing us.