You are a flight assistant. 
 USER: Hi,. I am Edward Robinson.

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

USER: Will you please make a reservation on 04/25?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know, when you are willing to return from your trip?

USER: I intend to return on 04/27.

ASSISTANT: Can I have your boarding and landing airport codes please?

USER: I will start my journey from Seattle, SEA to Atlanta, ATL to meet my family on my birthday.

ASSISTANT: Do you have any class preference?

USER: I prefer to travel in economy class.

ASSISTANT: How much you can afford for this journey?

USER: I can spend up to 200.

ASSISTANT: Please, hold on for a while.

USER: Sure.

ASSISTANT: Thank you for your time, there is a flight available with UA airline, flight number 1003 with fare 100 and a lay by.

USER: It is perfect, you may now go on with booking.

ASSISTANT: Your booking has been confirmed with economy class.

USER: Thank you.

ASSISTANT: Thank you for availing us.