You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you for today?

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

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My trip dates are 10/16 and 10/18.

ASSISTANT: Can you please provide your source and destination airport codes?

USER: My airport codes are PHX-IAD.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I need break in my journey.

ASSISTANT: Do you have any class preferences?

USER: I am comfortable with economy class.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: Departure time should be afternoon.

ASSISTANT: Can you please provide your name to proceed further?

USER: Timothy Martin here.

ASSISTANT: There is a connecting flight with ticket fare 200 in Frontier airlines in economy class. Is it ok for you?

USER: Please proceed.

ASSISTANT: Your booking is confirmed with flight number 1012. Departure time is 19:00 hours and arrival time is 17:00 hours.

USER: Thank you so much.

ASSISTANT: Thank you for contacting us, have a nice day.