Hello.
user
 Hello, how may I oblige you today?
assistant
I am Helen Thomas. I would like to book a ticket from SEA to IAH, can you please help me out?
user
Sure, can you please share your journey dates that you prefer to travel?
assistant
I am travelling on these dates OCT 23rd and 25th.
user
Do you have any other requirements?
assistant
I prefer departure time in the evening.
user
 Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.
assistant
Ok no problem, thank you for your services.
user
Thank you.
assistant