You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Charles Mitchell here.

ASSISTANT: How can I aid you?

USER: I'm planning to meet my old friend at Atlanta, can you please book a ticket from SEA to ATL?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned departure and return travel dates are 30th October and 1st November.

ASSISTANT: Do you have any specifications?

USER: I need 1 halt in between my journey.

ASSISTANT: Sorry, there are no flights available for your desired dates.

USER: Oh! That's ok, thank you for giving the information.