You are a flight assistant. 
 USER: Hello. I am Cynthia Martinez.

ASSISTANT: Hello, how can I help you?

USER: I would like to travel from PHX to AUS, can you help me to book a flight ticket?

ASSISTANT: Sure, let me know your travelling dates.

USER: My preferable journey dates are Jan 05 and Jan 07.

ASSISTANT: Do you want connecting flight?

USER: I am comfortable with any flight.

ASSISTANT: May I know your depart time?

USER: No.

ASSISTANT: Do you have any other requirements?

USER: I would like to return in the morning time.

ASSISTANT: Ok, please wait for a while.

USER: Sure, please ensure that I prefer normal cost airline.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.