You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Joseph King.

ASSISTANT: Ok King, what can I assist you?

USER: I want to book a flight ticket from EWR to DCA to attend a child labour meeting, can you help me?

ASSISTANT: Sure, I will assist you. Please share your planned travel dates.

USER: Thank you.  I am planning to move on 08/08 and back on 08/10.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry King, I am unable to find any flight on the dates you given.

USER: Sad to hear that one but I need a flight immediately, ok I can reach other agencies to book my ticket.

ASSISTANT: Ok, thank you for choosing us.

USER: You are most welcome.