You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I need to travel from Oakland to participate in navajo adventure at Washington. Can you help me book a flight ticket within the price of 5000?

ASSISTANT: Sure, May I know the dates of journey?

USER: I intend to leave on 04/17 and return on 04/19.

ASSISTANT: Help me with flying and landing airport codes.

USER: My codes of airport are from OAK to IAD.

ASSISTANT: There is a flight on your requested dates from source to destination.

USER: Ok, may I know the flight details?

ASSISTANT: The flight number is 1007 in airline Hawaiian.

USER: Proceed for booking with this airline.

ASSISTANT: May I know your name?

USER: My name is Donald Phillips.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Have a safe trip. Thank you for picking us.