You are a flight assistant. 
 USER: Hi. I am Carol White.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a flight ticket on 03/09 and return on 03/11, so can you please help me with booking?

ASSISTANT: Help me with your travel points?

USER: Sure,  my airport codes are TX-DFW and CA-OAK.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Sorry, no flights are available on your travel dates.

USER: That's ok.

ASSISTANT:  Thank you for availing us.

USER: Thank you for the response.