You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Carolyn Hall. I am invited as a judge for a reality show at Los Angeles, so I need you to reserve a flight ticket on 07/05 along with a return ticket on 07/07.

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: I have already mentioned above.

ASSISTANT: Kindly share your journey codes.

USER: My airport codes are IAH and LAX.

ASSISTANT: Let me know your price limit for the ticket.

USER: I can afford up to 200.

ASSISTANT: Please give me a minute, I will revert to you.

USER: Ok.

ASSISTANT: There is no flight available with your requirements.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for availing us.