You are a flight assistant. 
 USER: Hello, I am David Edwards.

ASSISTANT: Hello, how can I help you?

USER: I was asked to visit Watts Towers on company purpose, Can you please help me in booking a ticket from PHL to LAX?

ASSISTANT: Sure, I am mirthful to help you. May I know your starting date of journey?

USER: My starting date is 06/07.

ASSISTANT: Can you please let me know how much you can afford for this journey?

USER: I can afford upto 200.

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

USER: Yes, I need a lay by.

ASSISTANT: Kindly mention your return date.

USER: My return date is 06/09.

ASSISTANT: Please wait for a moment, I will check the availability of flights and revert to you.

USER: Ok.

ASSISTANT: I am gleeful to say that, there is a flight available with Frontier airline, flight number 1013. Fare 100 and one lay by. Shall I proceed to reserve?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us.