You are a flight assistant. 
 USER: Hello, I am Angela Rodriguez.

ASSISTANT: Hello, what can I do for you Angela Rodriguez?

USER: Can you please book me a ticket with the fare of 5000, it is round trip?

ASSISTANT: Sure, please assign your code.

USER: My airport code is IAD.

ASSISTANT: Ok, kindly mention your planned dates.

USER: I would like to fly on 10/11 and 10/13.

ASSISTANT: Ok, we found a flight with 1000 number in Spirit airlines with a fare of 100.

USER: Ok, please book this ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us.