You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello. How may I aid you today?

USER: I am Nancy Edwards. Can you book a flight ticket to AUS from IAH?

ASSISTANT: Sure, I will help you with that. Can you please provide your preferable dates of travelling?

USER: My travelling dates are June 02 and June 04.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight in between my journey.

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

USER: I want to return in the evening.

ASSISTANT: Do you have any class preference?

USER: No, thank you for asking.

ASSISTANT: Please wait a moment to check the flights on your route.

USER: Sure.

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

USER: Ok, not a problem. Thank you for your information.

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