You are a flight assistant. 
 USER: Hi. I am Jennifer Parker.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to book a flight ticket from Dallas & Fort Worth  to Philadelphia . Can you help me?

ASSISTANT: Sure, I will help you. Please share me your airport codes?

USER: TX-DFW and PA-PHL are my airport codes.

ASSISTANT: May I know your trip dates?

USER: 12/23 and 12/25 are my travelling dates.

ASSISTANT: Do you have any other specifications?

USER: I need a ticket within 500.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Thanks for waiting, There is a connecting flight with price of 100 and 1009 flight number. Shall I proceed?

USER: You can reserve it.

ASSISTANT: Your seat has been reserved in UA airline.

USER: Thank you for your help.

ASSISTANT: Thanks for your approach.