You are a flight assistant. 
 USER: Hi,. I am Virginia Johnson.

ASSISTANT: Hello, how may I help you?

USER: Please, help me in booking me a plane to Las Vegas, LAS from Seattle, SEA.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your journey dates?

USER: I will fly on 05/19 and recur on 05/21.

ASSISTANT: Thanks for sharing the details, give me a minute to check the flight availability.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: There is a flight available with fare 800 and single connection on your route. May I proceed?

USER: I need ticket with the fare of 500. Do not proceed.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Thank you for choosing us.