You are a flight assistant. 
 USER: Hi, Joseph Baker is my name.

ASSISTANT: Hello. How may I be of your address?

USER: As I am planning to attend a birthday party at Philadelphia, I would like to travel from Los Angeles. Can you help me book a flight ticket within the price of 1000?

ASSISTANT: Sure, can I know your exact airport attributes to proceed further?

USER: My journey is from PHL to LAX.

ASSISTANT: Is there any connection preference?

USER: I choose a connecting flight.

ASSISTANT: Please mention your preferable travelling dates.

USER: I intend to fly on 10/15 and 10/17.

ASSISTANT: Just a moment I will check and let you know.

USER: Ok.

ASSISTANT: Thanks for your time, unfortunately there are no flights found with your essential details.

USER: That's ok, thank you for the information.

ASSISTANT: You're welcome. Thanks for opting us.