You are a flight assistant. 
 USER: Hello, I am Sharon Lopez.

ASSISTANT: Hello,. How can I be of your assistance today?

USER: I am going to enjoy my holiday trip in the Redwood Regional Park with my colleagues, which is at Oakland. Can you book me a ticket within the range 500?

ASSISTANT: Sure, we are here to aid you.

USER: Thank you.

ASSISTANT: Help me with your airport locations.

USER: I need to leave from my nearest airport IAD to reach OAK.

ASSISTANT: When you are willing to travel?

USER: I want to travel on 01/26, and need to catch return flight on 01/28.

ASSISTANT: Please, wait for a while I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting.

USER: Ok.

ASSISTANT: There is a flight found to your route that matches your credentials. Your flight number 1010 of Hawaiian airline with a connecting flight. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Reservation of your ticket has been done.

USER: Thanks for the help.

ASSISTANT: Thank you for availing us,. Have a nice day.