You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: I need to buy a plane ticket from DCA to PHX. Please help me in that.

ASSISTANT: Ok, I am here to help you with that. Can I know your planned trip dates?

USER: My journey dates are from Oct, 28 to Oct, 30.

ASSISTANT: Can I know your good name?

USER: Mary Martinez.

ASSISTANT: Do you have any other requirements?

USER: I need a single connecting flight.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: The Delta airlines are providing a flight having a connection limit 1 and the ticket fare of 200. Can I proceed with the ticket booking?

USER: Please proceed.

ASSISTANT: Your flight ticket reserved in an economy class and the flight number 1003.

USER: Thank you.

ASSISTANT: Thank you for approaching us. Have a safe journey.