You are a flight assistant. 
 USER: Hi, David Davis here.

ASSISTANT: Hello. How can I help you?

USER: I want to make a reservation to IAH from IAD, as I have to go for medical visit near one specialist in Houston.

ASSISTANT: Can I know your travel dates?

USER: Yes, my travel dates are 08/09 to 08/11.

ASSISTANT: Give me a minute, let me check the details.

USER: Ok, make sure that connection limit is 1 as it is long distance travel.

ASSISTANT: The flight 1000 of Spirit airlines is perfectly matching with your requirements. Shall I book the ticket?

USER: Yes, you can reserve my ticket.

ASSISTANT: Your ticket is booked.

USER: Thank you for your help, I am happy with your service, I will keep booking through you in future too.

ASSISTANT: Welcome.