You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Could you please reserve me a flight ticket with the name of Ronald Lewis?

ASSISTANT:  Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your travelling dates?

USER: My trip dates are 07/11 - 07/13.

ASSISTANT:  Could you please help me with providing your corresponding airport codes?

USER: I want to fly from DC - DCA to NY - EWR.

ASSISTANT: How much you can spend for airfare?

USER: I can afford up to 5000.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: We found a Frontier airlines, flight number 1007 and the fare of 200 with single connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for approaching us.