You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello.

USER: This is Paul Thomas, from Houston.

ASSISTANT:  How can I aid you?

USER: I need to schedule my trip to Charlotte for attending a business meeting. Can you please help me in booking the ticket from IAH to CLT?

ASSISTANT: Ok, may I know your travelling dates?

USER: I am willing to travel on 10/15 and again I will be return back on 10/17.

ASSISTANT: Do you have any preference?

USER: I need a lay by in between my journey.

ASSISTANT: Ok, please wait I will revert you.

USER: Sure, I will wait for your response.

ASSISTANT:  Sorry, no flights were functioning on your travel dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT:  Thank you for availing us.