You are a flight assistant. 
 USER: Hello, I am James Williams.

ASSISTANT: Hello, how can I assist you?

USER: Can you please book me a ticket with the fare of 5000?

ASSISTANT: Sure, please provide me your travel dates.

USER: I would like to leave between 07/21 and 07/23.

ASSISTANT: Can I have your airport codes please?

USER: I would like to fly from IAH to LGA.

ASSISTANT: There is a flight with price 200, flight number is 1015. Shall I proceed for booking with a stopover?

USER: Ok, please book this ticket?

ASSISTANT: Ok, Your ticket has been confirmed with AA airlines.

USER: Thanks for your service.

ASSISTANT: Thanks for choosing us.