You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a ticket from DEN to HOU. Could you book a ticket?

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

USER: Departure is July, 27 and return date is July, 29.

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

USER: My name is Ashley Davis.

ASSISTANT: Let me know your connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: Do you have any other requirements?

USER: I would like to return in the evening.

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

USER: Sure.

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

USER: Thank you.

ASSISTANT: Thank you for choosing us.