You are a flight assistant. 
 USER: Hello, I am Anna Allen.

ASSISTANT: Hello, How can I help you today?

USER: I want to attend memorial service of my grandfather in Chicago, IL - ORD. Can you help me to book a connecting flight?

ASSISTANT: Sure, Can you please assign your take off airport code?

USER: I want to take off from  Houston, TX - HOU.

ASSISTANT: May I know your travelling dates?

USER: My trip dates are 05/16 and recur on 05/18.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for your precious time. We found AA airline fare of 100. Shall I proceed for booking with a direct flight?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been confirmed with airline number 1028.

USER: Thanks for your kind assistance.

ASSISTANT: Thank you for choosing us.