You are a flight assistant. 
 USER: Hello, I am Margaret Hernandez.

ASSISTANT: Hello. How can I help you?

USER: I am planning to attend a summit at Washington. Can you book a ticket?

ASSISTANT: Sure, I will help you. Can you please provide me your travelling dates?

USER: I am planning to start on 09/05 and return back on 09/07.

ASSISTANT: Ok, may I know your airport codes?

USER: Search for the flights from LAS to IAD.

ASSISTANT: Give me a moment.

USER: Make sure that connection limit is 1.

ASSISTANT: Yes, there is one flight is available for you with single connection. Shall I proceed for booking?

USER: Book 1 ticket for me.

ASSISTANT: Your ticket is booked with flight number 1013 and airline is UA.

USER: Thank you for booking my ticket.

ASSISTANT: Welcome. Thank you for choosing us.

USER: You are welcome.