You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I would like to travel from EWR to OAK as a holiday trip. Can you do the reservation?

ASSISTANT: Sure, we will help you. Please provide me your journey dates.

USER: My travelling dates are 09/27 and 09/29.

ASSISTANT: Ok, may I know your name please?

USER: Brandon Wright here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights available as per your requested details.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for contacting us.