You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Can you please help me in booking a flight ticket from DEN to HOU?

ASSISTANT: Sure, I am here to help you with that. Can I know your travelling dates?

USER: I want to fly on Nov 24 and return on Nov 26.

ASSISTANT: Ok, do you have any other requirements?

USER: I need a single connection.

ASSISTANT: May I know your name?

USER: Myself Jonathan Walker.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry to say that, there are no flights available based on your travelling dates.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.