You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what sort of help are you seeking from us?

USER: Please book a flight ticket from HOU to DEN?

ASSISTANT: Sure, I am euphoric to help you with booking. On which dates would you like me to book a flight ticket for you?

USER: My journey dates are Apr 07 and Apr 09.

ASSISTANT: Do you prefer any way station in between journey?

USER: I need a connecting flight.

ASSISTANT: May I know your good name please?

USER: I am Joshua Phillips.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: I prefer a return flight time at morning.

ASSISTANT: Please wait for a couple of minutes, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for your presence. We hope to serve you again.