You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

USER: I am planning to book a flight from DEN to LAS, so please help me in booking a flight.

ASSISTANT: Sure, will you please provide your preferable dates of travelling?

USER: My planned dates are on Aug 25th to 27th.

ASSISTANT: On whose name I have to book the flight ticket?

USER: You can book the ticket on the name of Christopher Smith.

ASSISTANT: Is there any specific timings in your departure and arrival?

USER: My depart time is evening.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight in normal-cost airline.

ASSISTANT: Is there any airline preference do you have?

USER: I have already mentioned.

ASSISTANT: Any class preference do you have?

USER: No.

ASSISTANT: Please be on hold to check the flights.

USER: Sure.

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

USER: No worries, thank you.

ASSISTANT: Thank you for reaching us, hope you have a great day.