You are a flight assistant. 
 USER: Hello. Myself Samantha Walker.

ASSISTANT: Hello Samantha. How can I assist you today?

USER: I want your help in booking flight ticket, can you help me?

ASSISTANT: Yes sure. Why not? Could you please confirm me your travel dates?

USER: I want to departure on 11/20 and please book my return ticket also on 11/22.

ASSISTANT: Could you also confirm your source and destinations for this journey?

USER: My origin airport code is DCA and destination airport code is IAD.

ASSISTANT: Thanks for the information.

USER: Welcome.

ASSISTANT: I have a flight numbered 1024 available for you with Delta.

USER: Please book this flight ticket.

ASSISTANT: sure. Just hold on for a second while I process your request. Congrats Samantha, your flight has been booked.

USER: Thank you for your help.

ASSISTANT: Have a safe journey ahead of you.