You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can aid you at present?

USER: Will you please help me to book a flight in Big Brand Airline to reach Houston?

ASSISTANT: Sure, we are gleeful to aid you for booking.

USER: Thank you for accepting my request.

ASSISTANT: Let me know your class preference.

USER: I am fine in any class.

ASSISTANT: Do you prefer either a connected flight or a direct flight?

USER: I prefer a connecting flight.

ASSISTANT: On what dates, do you want to travel?

USER: I have scheduled my trip dates on 15th and 17th of October month.

ASSISTANT: Can you please mention your airport codes?

USER: My airport codes are AUS - IAH.

ASSISTANT: May I know your depart and arrival timings?

USER: Sure, I would like to depart in afternoon time.

ASSISTANT: Please wait for a while.

USER: Ok, I will wait.

ASSISTANT: Sorry to notify you that, we did not find any flights running to that location due to abnormal weather conditions.

USER: Ok, not a problem.

ASSISTANT: Kindly please mention your good name for documentation.

USER: Sure, my name is William Jackson. Thank you for your service.

ASSISTANT: Ok, thank you for reaching our service.