You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Do you have any flight from IAD to BOS?

ASSISTANT: Yes, can you please tell me on which dates do need a flight?

USER: I need flight on 07/21 and return to my place on 07/23.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: The Frontier airlines with connection limit 1 and the price is 300. Are you fine with this flight?

USER: Yes, it's exactly matched with my details, you can proceed.

ASSISTANT: Ok, can you tell me your good name to book the flight ticket?

USER: Raymond Adams here.

ASSISTANT: Ok, your ticket is booked with the flight number 1015.

USER: Thanks for your help.

ASSISTANT: You are welcome.