You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: I am Debra Wright. I need your assistance in flight booking service, can you assist me in this?

ASSISTANT: Sure, we are here to assist you.

USER: Thank you.

ASSISTANT: Please, share your source airport code.

USER: My nearest airport to board is Los Angeles, LAX.

ASSISTANT: When are you willing to start your journey from Los Angeles?

USER: I would like to start my trip on 11/16.

ASSISTANT: Kindly, mention your fare limit.

USER: I can spend up to 200.

ASSISTANT: May I know your destination airport code?

USER: Denver, DEN is my destination.

ASSISTANT: When will you return back from Denver?

USER: I intend to return on 11/18.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Sure, I will wait for your response.

ASSISTANT: Thank you for your valuable time.

USER: Ok.

ASSISTANT: We are sorry to inform you that, we did not find any flight with fare 200.

USER: Ok, I will choose other airline.

ASSISTANT: Ok, Fine.

USER: Thank you for best service.

ASSISTANT: Thank you for reaching us, have a good day.