You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Susan Martin here.

ASSISTANT: How can I help you?

USER: I am looking for a economy class flight for my holiday trip to Austin. So can you book a flight ticket for me?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: May I know your take off airport code?

USER: The airport codes are from DEN to AUS.

ASSISTANT: Can you please share your planned journey dates?

USER: My trip dates are from 23 July to 25 July.

ASSISTANT: Do you have any specifications?

USER: I need a single connecting flight.

ASSISTANT: Thank you for sharing the details.

USER: Thank you.

ASSISTANT: There is a flight available with fare 100 and single connection in American Airline having 1005 as flight number. May I confirm it?

USER: I am ok with the airlines and fare. You can book it.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.