You are a flight assistant. 
 USER: Hi. I am Mary Young.

ASSISTANT: Hello, what kind of service you are expecting from us?

USER: I want to travel to San Francisco with price limit 200.

ASSISTANT: OK, may I know your travelling details?

USER: I want a single connection. My travelling days are from 07/16 to 07/18.

ASSISTANT: May I your source and destination airport dates?

USER: My airport codes are from PA-PHL to CA-SFO.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight with 1007 UA airline which matches to your details and the price is 100. With one connection.

USER: Ok, proceed for booking.

ASSISTANT: Ok, your ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.