You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Sandra Gonzalez here.

ASSISTANT: Sandra, how may I guide you?

USER: Do you have any flight from AUS on 08/20?

ASSISTANT: Sure, I am here to help you. When would you like to travel?

USER: I would like to return on 08/22 from ORD.

ASSISTANT: Just a moment.

USER: Sure.

ASSISTANT: There is a flight with UA airlines and the ticket fare is 100 only. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Sure Sandra, your ticket is booked with the flight-1004.

USER: Thanks for your help.

ASSISTANT: You are most welcome.