You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I would like to visit Austin to meet my sister, please help me in booking a ticket from PHX to AUS.

ASSISTANT: Sure, may I know your travelling dates?

USER: My planned travel dates are on Oct 07 and Oct 09.

ASSISTANT: Do you need any specifications for this reservation.

USER: My return time should be in evening.

ASSISTANT: Please wait a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no flight tickets available on your journey dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching our service. May I know you name for our data purpose.

USER: My name is Cynthia Roberts.