You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Emily Roberts here.

ASSISTANT: How can I assist you today?

USER: I would like to visit Washington for a business trip, so can you please help me out with booking of a flight ticket from PHX on 01/28?

ASSISTANT: Sure, will you provide your destination airport code please?

USER: My landing airport code is IAD.

ASSISTANT: Please provide your return date that you want to travel.

USER: I am planning to return on 01/30.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Based on your details, there is a flight with price 200 and the connections 1 is available.

USER: That's perfect, you can proceed with booking.

ASSISTANT: Your ticket is booked. the flight number is 1007.

USER: Thank you for your assistance.

ASSISTANT: Welcome, have a great day.