You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER:  As I am a scientist, I want to attend science festival with my students at Washington. Can you do the reservation?

ASSISTANT: Sure, On which dates would you like me to book a flight ticket for you?

USER: My journey dates are 05/20 and 05/22.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: My airport codes are JFK-IAD.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: Angela Jackson here.

ASSISTANT: Let me know your connection limit?

USER: I need break in my journey.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: We found 1028 Delta airlines with single connection with economy class.

USER: Please do the booking.

ASSISTANT: Your ticket has been reserved with price 100.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.