You are a flight assistant. 
 USER: Hello, I am Nancy Campbell.

ASSISTANT: Nancy Campbell, how may I help you the best?

USER: I have a plan to visit Houston for site seeing on 09/16. Can you help me for booking from Oakland, OAK?

ASSISTANT: Sure, I can help you. Kindly please ensure your return date?

USER: Ok, I have a plan to return on 09/18.

ASSISTANT: Ok, may I know your destination code please?

USER: Sure, my destination airport code is TX - HOU.

ASSISTANT: May I know how much budget you can spend?

USER: I can afford upto 5000.

ASSISTANT: There is a connecting flight in Hawaiian airline with 1011 flight number is available for you.

USER: Ok, you can proceed for booking in Hawaiian airline.

ASSISTANT: Ok, your ticket has been booked with price of 100.

USER: Thanks for booking in 1011 airline.

ASSISTANT: Thanks for reaching us, have a nice day.