You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I was looking for a flight on the route from Charlotte to Houston, please help me with finding a flight.

ASSISTANT: Sure, I will help you on that. Could you please provide your nearest airport codes for booking a flight?

USER: My takeoff will be at CLT and my landing airport will be IAH.

ASSISTANT: May I know your preferable dates that you want to travel?

USER: My journey starts on 08/25 and I will be returning on 08/27.

ASSISTANT: On whose name I have to book this flight ticket?

USER: I will be booking this reservation by my name which is Margaret Gonzalez.

ASSISTANT: Ok Margaret, please be on hold to check the availability of flights and I will revert back to you.

USER: May I know the cost of ticket please?

ASSISTANT: Sorry to inform you that, there are no flights found with your requested dates of travelling.

USER: Oh! that's sad, thank you for assisting me.

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

USER: You are most welcome.