You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brian Wilson here.

ASSISTANT: How may I support you today?

USER: I need a direct flight for my journey, can you please reserve a flight ticket from SEA to IAD?

ASSISTANT: Sure, we are mirthful to assist you.

USER: Thank you.

ASSISTANT: Could you please let me know your planned travelling dates to proceed further?

USER: My departure is on July 15 and please book my return ticket also on July 17.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Ok, please wait a while.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Oh! Sad to hear that. Anyway, thank you for the information.

ASSISTANT: Thank you for approaching us.

USER: Welcome.