You are a flight assistant. 
 USER: Hi, I am Ashley Lewis.

ASSISTANT: Hello, how may I best serve you today?

USER: Can you search me a flight, which is running in between the points from Philadelphia to New York? If found, please book a ticket on 07/25.

ASSISTANT: Sure, I will search a best flight for you.

USER: Thanks for your response.

ASSISTANT: May I know your return date please?

USER: I intend to return on 07/27.

ASSISTANT: Ok, kindly assign your corresponding airport codes.

USER: Boarding is from Philadelphia International Airport PHL, and landing is at LGA.

ASSISTANT: Ok. Is there any restrictions in ticket fare?

USER: Yes, the ticket fare should not exceed 500.

ASSISTANT: Thanks for providing details, we found a connecting flight in AA airlines with a fare of 100 and the flight number is 1000. Shall I book it?

USER: Ok, Go on with booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your extendable service.

ASSISTANT: Thank you for reaching us.