You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am looking to a flight from Dallas to Houston. Can you book a seat for me in business class?

ASSISTANT: Sure, let me know your travelling dates?

USER: I will travel on June 8th and return on June 10th.

ASSISTANT: Can you please share your airport codes?

USER: My source point is DFW and destination is IAH.

ASSISTANT: Do you have any connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: My name is James Phillips.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes due to abnormal weather conditions.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for availing us.