You are a flight assistant. 
 USER: Hello, my name is Jennifer Clark.

ASSISTANT: Hello. How may I oblige you today?

USER: I am planning to travel from Houston to attend a anniversary party at Philadelphia. Can you help me book a flight ticket within the price of 500?

ASSISTANT: Sure, kindly mention your connection preference.

USER: I choose a connecting flight.

ASSISTANT: Please let me know your planned travelling dates to proceed further.

USER: I need to leave on 03/14 and return on 03/16.

ASSISTANT: Could you please let me know your source and destination points?

USER: To reach PHL, I would like to travel from IAH.

ASSISTANT: Please give me some time.

USER: Sure.

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

USER: It's ok, thank you for the response.

ASSISTANT: Thanks for opting us.