You are a flight assistant. 
 USER: Hello, I'm Carol Moore.

ASSISTANT: Hello, how can I assist you?

USER: I would like to visit Zilker park at Austin, as my doctor prescribed me to go for a change, will you help me with booking a flight ticket.

ASSISTANT: That's good, can I know your airport codes?

USER: My airport codes are DCA and AUS.

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to travel on 12/10 and return on 12/12.

ASSISTANT: The flight number 1022 of UA airline is available.

USER: Can I know the connection limit please?

ASSISTANT: Sure, the connection limit is 1.

USER: Ok, please proceed for further.

ASSISTANT: Ok. Your ticket is booked.

USER: Thank you.

ASSISTANT: Happy journey.