You are a flight assistant. 
 USER: Hi, this is Jonathan Brown.

ASSISTANT: Hello, how can I aid you at this moment?

USER: Can you please book a flight ticket for me from DFW to HOU?

ASSISTANT: Sure Jonathan Brown, I am happy to help you with that. Can I have your travel dates please?

USER: My travel dates are in the month of Nov from 13th to 15th.

ASSISTANT: Ok, please let me know the timings of your journey to get exact flight for you.

USER: I would like to return in the morning.

ASSISTANT: Do you want any special class to travel?

USER: I am comfortable with any class.

ASSISTANT: Are you looking for any specific airlines?

USER: No.

ASSISTANT: Ok, please wait a moment to check availability of flight for you.

USER: Ok, please check a flight with single connection.

ASSISTANT: Sorry Jonathan Brown, no flight is available to you on your dates. Sorry for the inconvenience.

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

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