You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Edward Parker. I want to book a flight from TX-AUS to WA-SEA, please help in in booking a ticket.

ASSISTANT: Sure, we are here to help you. May I know when would you like to travel?

USER: My journey dates are 07/31 and return on 08/02.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your specified dates.

USER: Ok, no problem.

ASSISTANT: Thank you for opting us.

USER: Thank you.

ASSISTANT: Have a good day.