You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I have a concert in Houston, can you book a ticket please?

ASSISTANT: Could you please provide your airport codes?

USER: My airport codes are HOU to IAH.

ASSISTANT: Could you please provide your travelling dates?

USER: I want to travel on 04/21 and return on 04/23. I want to book a ticket in the name of Barbara Carter.

ASSISTANT: There is a flight available with price 200 and flight number is 1014, would you like to proceed?

USER: You can proceed.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your quick response.

ASSISTANT: You are welcome. Have a safe journey.