You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Helen Gonzalez. I would like to attend a live event in Phoenix, could you please help me with booking a flight ticket?

ASSISTANT: Sure Helen, how long is your trip?

USER: My departure date is on 10/15 and return date is on 10/17.

ASSISTANT: I think so it is weekend, may I know your airport codes from where are you travelling to Phoenix.

USER: My source airport code is OAK and destination airport code is PHX.

ASSISTANT: Please give me a while.

USER: Sure.

ASSISTANT: Helen, there is a flight-1009 with US airline.

USER: Make sure that the price limit should not exceed 500.

ASSISTANT: Helen, the price limit is with in 500.

USER: Please confirm the booking.

ASSISTANT: The ticket has booked.

USER: Thank you for the help.

ASSISTANT: Thanks for reaching us. Have a great time in event.