You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Donna Nelson here.

ASSISTANT: How can I assist you today?

USER: Is this flight ticket booking agency?

ASSISTANT: Yes Donna, welcome to our agency.

USER: Ok, I want to check in a flight, could you please help me out with that?

ASSISTANT: Sure, will you provide your travelling dates please?

USER: I am heading from my location on 03/21 and please book a return flight on 03/23.

ASSISTANT: Will you please provide your airport codes that you want to travel?

USER: I want to travel from JFK to AUS, for an important meeting.

ASSISTANT: Please give me a moment.I can get back to you with the information.

USER: Sure, take your time to check.

ASSISTANT: Thank you for waiting.

USER: Thank you.

ASSISTANT: As per your request, there is a flight with price 100 and the connections 1 is available. Shall I proceed for booking the flight ticket?

USER: Please book this flight for me.

ASSISTANT: Your ticket is booked.The flight number is 1003 and the airline is UA.

USER: I will appreciate your service, thank you for your help.

ASSISTANT: It's my pleasure.Thank you for reaching us. Have a great day.