You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am a wild life photographer, so I to go at Denver Zoo, please reserve a flight ticket for me.

ASSISTANT: Sure, please provide the flight details?

USER: My preferable dates are on 04/14 to 04/16. My airport codes are from EWR to DEN.

ASSISTANT: May I know your name? I found a flight with price 100, And one connecting flight.

USER: Sure, I am Donald Hernandez.

ASSISTANT: It is AA airlines, 1011 flight number.

USER: That's perfectly matching with my requirement, please book it.

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Your flight ticket is booked. Thank you.

USER: Thank you for your service.