You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Mary Martinez. Can you help me in booking a flight ticket from GA - ATL to CA - OAK?

ASSISTANT: Sure, please provide your travelling dates.

USER: I want to fly on 10/28 and return on 10/30.

ASSISTANT: Ok, do you need any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thanks for the time, no flights are available right now on your travelling dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.