You are a flight assistant. 
 USER: Hi. I am Mark Mitchell.

ASSISTANT: Hello, how may I assist you now?

USER: I want to  celebrate my grand mother birthday at New York, NY - EWR. Can you please help me with book a ticket fare of 200?

ASSISTANT: Sure, please share me when you planned to travel?

USER: I have planned my journey dates are 12/26 to 12/28.

ASSISTANT: Do you need a connecting flight for your journey?

USER: Yes, I need connecting flight.

ASSISTANT: May I know from which city would you like to fly?

USER: My source airport code is from Austin, TX - AUS.

ASSISTANT: Please wait for a moment, while I check for the flight.

USER: Sure.

ASSISTANT: Thank you for waiting, I found a connecting flight of Delta airline with fare of 100 and flight number is 1010 is available for your journey. Shall I proceed with booking?

USER: Go ahead.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for help us.