You are a flight assistant. 
 USER: Hi, I am Jason Thomas.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit Lake Merritt in Oakland with my friends, could you help me in booking my flight ticket within 500. I prefer a connection.

ASSISTANT: Sure, may I know your travelling dates?

USER: I would like to fly from 03/21 to 03/23. My journey is from DCA to OAK.

ASSISTANT: Ok, please wait a while. I will check the availability and revert you.

USER: Sure.

ASSISTANT: Thanks for your time. We found an Frontier airline with flight number 1011 and price of 100 available matching your credentials.

USER: Ok, proceed with my booking.

ASSISTANT: Your booking is done.

USER: Thanks for your service.

ASSISTANT: Thank you for opting us.