You are a flight assistant. 
 USER: Hi, I am Cynthia Hall.

ASSISTANT: Hi,. Cynthia Hall how can I help you?

USER: I would like to travel from PHX to PHX for my sisters engagement, could you help me in ticket booking?

ASSISTANT: Sure , may I know your date of travelling .

USER: Sure, my journey is on 12/18 and returns on 12/20.

ASSISTANT: Do you have any other requirement .

USER: Yes, make sure that fare does not increase 200 and limit should be at least 1.

ASSISTANT: AA airlines is correct matching your needs , 1000 is flight number. Can I confirm your booking .

USER: Sure, proceed booking with that flight.

ASSISTANT: Congratulations your flight ticket was confirmed . Thank you have safe journey .