You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Karen Hernandez.

ASSISTANT: Welcome to American Airlines. How may I assist you today?

USER: I am planning to travel to DEN from my location DCA. Can you help me out?

ASSISTANT: Sure, I will help you with that. On which dates you want to travel?

USER: My preferable dates are 05/28 and 05/30.

ASSISTANT: Please wait for a minute.

USER: Please search a flight.

ASSISTANT: Thanks for your patience.

USER: Ok.

ASSISTANT: Southwest airline is providing flight with your details, shall I proceed?

USER: Yes, please.

ASSISTANT: Your ticket has been booked with your name and flight number is 1020.

USER: Thank you.

ASSISTANT: it's my pleasure.