You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can assist you today?

USER: I am Kathleen Mitchell here, I want to reserve my ticket from ORD to HOU, can you please help me to book a ticket?

ASSISTANT: Sure, I can help you in booking flight ticket. Can you please mention your travel dates for booking flight ticket?

USER: Sure, my dates of journey is from 04/26 to 04/28.

ASSISTANT: Please hold on a moment, I will check flight availability in this route.

USER: Ok, I will wait. Please make sure that the price is 200.

ASSISTANT: Sure. Sorry for the inconvenience no flights available in this route as per your requested dates.

USER: Ok, no problem. Thank you for your service.

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