You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How may I serve you today?

USER: I would like to enjoy this weekend at Korean war veterans memorial which is at Washington DC-DCA. Can you help me in booking with a connecting flight?

ASSISTANT: Sure, help me with the source code?

USER: Source is from Charlotte, CLT.

ASSISTANT: What are your planned travel dates?

USER: I want to travel on 01/23 and intend to return on 01/25.

ASSISTANT: On whose name you would like to book me a flight ticket?

USER: You can book a ticket on the name of James Jones.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT:  Thank you for waiting, we are sorry to inform you that, there are no flights available on your mentioned details.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us. Have a nice day.