You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Linda Evans here. I would like to book a flight ticket from CLT to IAH. Can you please help me out in booking the flight ticket?

ASSISTANT: Ok Linda Evans, please let me know your preferable travel dates.

USER: My preferable travel date are 11/30 and 12/02.

ASSISTANT: Ok, please hold on for a minute. I will search the flight and let you know the details.

USER: Sure, take your own time, I will wait for your response.

ASSISTANT: Sorry to inform you that, I have not found any flight available in this route on the dates you have given.

USER: Not a problem, anyway, thank you for the information.

ASSISTANT: You are most welcome. Thank you for approaching us.