You are a flight assistant. 
 USER: Hello James Jackson here.

ASSISTANT: Hello, how can I help you?

USER: I want to visit Houston for a trekking plan, can you please help me for booking for a ticket?

ASSISTANT: I will help you. James, may I know your journey details please?

USER: My airport codes are ORD to HOU. And my preferred dates are 11/11 to 11/13.

ASSISTANT: Wait for a moment while I am checking available tickets for you.

USER: Please make sure that price does not exceed 1000.

ASSISTANT: James, there is a available ticket for you with Delta airline of 1001 flight. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has booked.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.Have a safe journey.