You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Frank Johnson.

ASSISTANT: How can I aid you?

USER: I am looking for a flight from LAS to OAK, can you reserve me a flight ticket for me?

ASSISTANT: Sure. May I know your travelling dates?

USER: My trip dates are from 06/24 till 06/26.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight in my trip.

ASSISTANT: Is there any price limit?

USER: I will afford for only 500.

ASSISTANT: We found a flight with the price of 700.

USER: Oh! that's sad to hear. I can't afford more than 500. Please don't proceed with it.

ASSISTANT: Ok.

USER: Anyway, thank you for your information.

ASSISTANT: Thank you for reaching us.