You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a economy class flight?

ASSISTANT: I am happy to help you, may I know your locations?

USER: My airport codes are ATL and IAD.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: May I know your itinerary dates please?

USER: My trip dates are Oct 19 and 21.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Linda Brown.

ASSISTANT: We have a flight-1010 in economy class, is it fine for you?

USER: Proceed with booking.

ASSISTANT: Ok, booking is done on UA airlines.

USER: Thank you.

ASSISTANT: Welcome Linda Brown.