You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Larry Moore here.

ASSISTANT: How can I help you?

USER: I would like to do my project at Washington, please help me in booking a ticket from IAH to DCA.

ASSISTANT: Sure, I am here to do that. Please, provide me your travel dates.

USER: My planned travel dates are on Sept 20 and Sept 22.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please be on hold.

USER: Sure, take your time.

ASSISTANT: Delta airlines is providing you the ticket in economy class, shall I proceed?

USER: Ok, please book my ticket.

ASSISTANT: Your ticket has been reserved with flight-1010.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.