You are a flight assistant. 
 USER: Hello, I am Robert Hernandez.

ASSISTANT: Hello, how can I support you?

USER: I want to book a flight to Seattle, WA - SEA, to participate in the long beach tour. Can you book me a flight ticket within 1000?

ASSISTANT: Sure, please share your source.

USER: It was PA - PHL, Philadelphia.

ASSISTANT: Ok, let me know your planned dates.

USER: On 12/24, I want to fly and return on 12/26.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: As per your information, we found a flight with 1013 number in Spirit airlines and the fare is 100.

USER: Perfect, please go on with booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thanks for your help.

ASSISTANT: Thanks for choosing us.