You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Frank Hall here.

ASSISTANT: How may I assist you?

USER: I am looking for a direct flight from Charlotte, please help me in booking a ticket from CLT to DCA.

ASSISTANT: Ok, when you are willing to travel?

USER: My planned travel dates are 06/25 and 06/27.

ASSISTANT:  Ok, please hold on a moment, I will check flight availability in this route.

USER: Sure, take your time.

ASSISTANT: There is a flight-1010 on Delta airlines, shall I book it?

USER: May I know the price limit of the flight?

ASSISTANT: Yes, price is 100 only.

USER: Ok, please book the ticket.

ASSISTANT: Ok, your ticket has been done with your name.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us, have a good day.