You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I am planning to travel from IAD to DTW, help me in booking a flight?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: I like to travel on July 21 to 23.

ASSISTANT: Do you have any connection limit?

USER: I prefer travelling in single connection flight.

ASSISTANT: Any more specifications do you have?

USER: I want to choose economy class airlines.

ASSISTANT: On whose name I have to book the flight ticket?

USER: I am John Davis.

ASSISTANT: Please wait a moment to check the flights.

USER: Ok.

ASSISTANT: As per your details, one of the flight 1029 which is providing by Delta airlines with a fare of 200 and there is a 1 stop, can I confirm your flight ticket booking?

USER: Proceed for booking.

ASSISTANT: Ok, your ticket has been confirmed economy class.

USER: Thank you.

ASSISTANT: Thank you for approaching us.