You are a flight assistant. 
 USER: Hello, Linda Jones here.

ASSISTANT: How may I assist you?

USER: I would like to go for a change to Washington as my doctor suggest, can you please book me a flight ticket within price 500?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please provide me your travel dates?

USER: My planned dates are 07/09 and 07/11.

ASSISTANT: What are your preferable airport codes?

USER: I want to travel from MCO to IAD.

ASSISTANT: We have an AA airline, of fare- 100, connections- 1 available for your journey.

USER: Please book it for me.

ASSISTANT: Your ticket is confirmed with flight 1021, having an economy class.

USER: Thank you for your help.

ASSISTANT: Thanks for approaching us.