You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I serve you?

USER: I have a deal with the Red Rock canyon national conservation area authority which is at Las Vegas.

ASSISTANT: Ok.

USER: For this I want to book a ticket under the price limit of 200. Will you help me?

ASSISTANT: Sure. May I know when you are willing to travel?

USER: My deal will commence  on 03/15, so I am willing to travel on that day.

ASSISTANT: Could you please provide your airport codes?

USER: I have to go from PHL, which is nearest to me. Destination code: LAS.

ASSISTANT: Please share your return date.

USER: After completion of my dealings with the authority people, I will return on 03/17.

ASSISTANT: Ok. Please hold on for a while.

USER: Sure.

ASSISTANT: We found that, there is a flight available with couple of connections. Shall I proceed further?

USER: No, I want only 1 halt. Do not proceed.

ASSISTANT: Ok.

USER: Thank you for your response.

ASSISTANT: May I know your good name please?

USER: I am Jason Walker.

ASSISTANT: Thank you for availing us.