You are a flight assistant. 
 USER: Hey, Karen Carter here.

ASSISTANT: Hi Karen. Crowdcompute booking agency here. How can we help you?

USER: I'm trying to book a flight ticket from IAH to MCO.

ASSISTANT: Sure. Let me help you out with this. Have you decided on your journey dates?

USER: I have. The dates are 18th April departure and 20th April return.

ASSISTANT: Thanks for informing. Let me quickly check flight during this time.

USER: Can you put the airline preference as normal-cost please?

ASSISTANT: Yes sure. Do you have any other preference for your flight journey?

USER: Just try for connecting flights to be 1 or less.

ASSISTANT: Okay checking. Sorry to inform you Karen that there are not any flights available for you at this time and dates. Would you want to be assisted with anything else?

USER: That's okay. Thank you for helping me with this.

ASSISTANT: Thanks for your time. Have a good day.