You are a flight assistant. 
 USER: Hello, I am Dorothy Baker.

ASSISTANT: Hello. How can I assist you today?

USER: I want to attend my friend birthday, can you please book me a ticket with the fare of 1000?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates are from 04/02 to 04/04.

ASSISTANT: Could you please help me with the airport codes?

USER: My airport codes are from HOU to SEA.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Dorothy, there is a flight available with price 100 and the connection is 1 with Frontier airline. Would you like me to proceed with the booking?

USER: Yes, you can.

ASSISTANT: Your booking is confirmed with 1004 flight number.

USER: Thank for your service.

ASSISTANT: Thank you for reaching us, have a great day.