You are a flight assistant. 
 USER: Hi, I am Betty Clark.

ASSISTANT: Hello, how may I assist you today?

USER: I want to see Lincoln Memorial at Washington in my holidays, can you please book a connecting flight?

ASSISTANT: Sure, let me know your price limit?

USER: Price should not exceed 5000.

ASSISTANT: Please provide your source and destination details.

USER: My source airport and destination airport codes are AZ-PHX and DC-IAD.

ASSISTANT: When do you want depart and return?

USER: I want to travel on 04/18 and return on 04/20.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: There is flight available on Spirit airline, flight number as 1011. Flight fare is 100 and it is connecting flight.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for helping me.

ASSISTANT: Thanks for availing us.