You are a flight assistant. 
 USER: Hello, I am William Clark.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket to Atlanta, GA - ATL to enjoy in Beer festival with my friends. Can you please book a ticket with price 1000?

ASSISTANT: Sure, may I know your journey codes?

USER: My journey dates are 05/25 and 05/27.

ASSISTANT: Please provide your Source code.

USER: I would like to travel from Houston, TX - HOU.

ASSISTANT: Please wait for a minbute.

USER: Sure.

ASSISTANT: We found a flight with number 1013 and Frontier as airline. The cost of the ticket is 200.

USER: Ok, please proceed for booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank You for reaching us.