You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Can you help me in reserving my flight ticket from HOU to DFW?

ASSISTANT: Sure, On which dates would you like me to book a flight ticket for you?

USER: I prefer to depart on June 21 and would like to return on June 23.

ASSISTANT: On what name, do I need to reserve your ticket?

USER: Please reserve the ticket with my name Dennis Walker.

ASSISTANT: Let me know your connection limit?

USER: I would like to travel in direct flight for this trip.

ASSISTANT: Do you have any other requirements?

USER: No, thanks for asking.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure, I will wait for your information.

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

USER: Ok, not an issue. I will find any alternate for this trip. Anyways, thank you for providing information.

ASSISTANT: Thank you for choosing us.