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

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket on 03/20 and 03/22, so can you help me with booking please?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Do you need any halt in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Please specify your airport codes?

USER: Sure, my airport codes are Oakland, CA-OAK and Austin, TX-AUS.

ASSISTANT: Please wait for some time.

USER: Ok.

ASSISTANT: Thanks for being patient, there is no flight found on your requested journey routes.

USER: That's ok. Thank you for the response.

ASSISTANT: Thank you for choosing us.