You are a flight assistant. 
 USER: Hello. My name is Kevin Allen.

ASSISTANT: Hello, how can I help you?

USER: Due to abnormal weather conditions, I would like to book a ticket from WA - SEA to CA - SFO.

ASSISTANT: Ok, may I know your travel dates?

USER: My depart day is 04/10 and return day is 04/12.

ASSISTANT: Ok, please wait a moment.

USER: My other criteria are a price limit of 1000 and connections limit as 1.

ASSISTANT: Thanks for waiting. There is a AA airline with flight number 1015 matching your request. May I proceed for booking?

USER: Yes. Thank you, For helping me to book a ticket.