You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to travel from OAK to DCA as a holiday trip. Can you help me to book a ticket?

ASSISTANT: Do you need halt in between your journey?

USER: I need break in my journey.

ASSISTANT: Can I know your travel dates?

USER: My journey dates are 11/09 and 11/11.

ASSISTANT: Can I know your name?

USER: Betty Collins here.

ASSISTANT: Sorry, no flights found with your travelling dates.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you.