You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My name is Mark Clark. I am planning to travel from MCO to IAH, could you please help me with that?

ASSISTANT: Sure Clark, can I know your travel dates?

USER: Departure date is 07/04 and return date is 07/06.

ASSISTANT: Give me a minute, I will check the details of the flight.

USER: OK.

ASSISTANT: The flight 1003 of AA airline is available for you. Shall I book the ticket?

USER: Price limit should not exceed 500 and connection limit should be 0.

ASSISTANT: Sorry, there are no flights available with 0 connections.

USER: That's OK.

ASSISTANT: Thank you. Have a nice day.

USER: Thank you for the information.

ASSISTANT: Welcome.