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

ASSISTANT: Hello, how can I serve you for the day?

USER: I am planning to meet my childhood friend on her birthday at Philadelphia, PHL.

ASSISTANT: Ok.

USER: So, please help me in booking a flight ticket from Dallas, DFW.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Do you need lay by in between your journey?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: Can I have your depart date please?

USER: 08/17 is my depart date.

ASSISTANT: How much you can afford for this journey?

USER: I can afford up to 5000.

ASSISTANT: To proceed further, I need your return date of journey.

USER: I intend to return on 08/19.

ASSISTANT: Please, wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your time, there is a flight available with Hawaiian airline, flight number 1007 with fare 100 and a lay by. Shall I proceed to book?

USER: Yes, you can.

ASSISTANT: Your booking has been processed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.