You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best assist you now?

USER: I am Donna Garcia. I want to book a flight ticket within a price limit of 200, can you help me in booking a flight ticket?

ASSISTANT: Sure, can you please forward your journey dates?

USER: I would like to fly on 10/21, return on 10/23.

ASSISTANT: Ok, may I know your boarding and landing airports with codes?

USER: My source is Seattle, WA - SEA, destination is Phoenix, AZ - PHX.

ASSISTANT: Ok, please hold on a minute.

USER: Sure.

ASSISTANT: We found a connecting flight in UA airlines with a fare of 200 and the flight number is 1028. Shall I proceed?

USER: Ok, proceed to booking.

ASSISTANT: Sure, your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.