You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: Please search if any flight is available from AUS to HOU.

ASSISTANT: Sure, can I know your travel dates?

USER: I would like to my ticket to be booked on 05/19 and return on 05/21.

ASSISTANT: The flight 1000 of AA airlines is available on your request. Shall I proceed?

USER: Please book 1 ticket in this flight on the name Rachel Hernandez.

ASSISTANT: Ok. Your ticket is booked.

USER: Thank you for your service.

ASSISTANT: You are welcome.