You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hi. How can I help you.

USER: I want to book a connecting flight ticket to meet  my parents. Can you help me?

ASSISTANT: Your travelling dates please?

USER: 08/21 and 08/23 are my travelling dates.

ASSISTANT: Your travelling airport codes please?

USER: DEN and AUS are my airport codes.

ASSISTANT: Do you have any other specifications?

USER: I prefer an economy class.

ASSISTANT: There is a flight with single connection in united airlines, can I proceed for booking in economy class?

USER: You can reserve it.

ASSISTANT: On which name can I  proceed for booking?

USER: Cynthia Campbell.

ASSISTANT: your booking is done in 1028 flight.

USER: Thank you.

ASSISTANT: Thank you for choosing us.