You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render 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, I would be happy to help you.

USER: Thank you.

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

USER: My airport codes are LAX-DCA.

ASSISTANT: In which class would you like me to book your flight ticket?

USER: I am comfortable with any class.

ASSISTANT: Let me know your connection limit.

USER: I need break in my journey.

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

USER: My journey dates are 01/27 and 01/29.

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

USER: Sarah Campbell here.

ASSISTANT: Do you have any other requirements?

USER: Return time should be afternoon.

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

USER: Sure.

ASSISTANT: We found 1001 Frontier airlines with single connection with economy class and depart time is 13:00 PM. Shall I proceed with the booking?

USER: Go ahead.

ASSISTANT: Your ticket has been reserved with price 200.

USER: Thank you.

ASSISTANT: Thank you for choosing us.