You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, this is flight booking agency? How can I help you?

USER: I am searching for a flight ticket from SEA to OAK but I did not found, can you please search a flight ticket for me?

ASSISTANT: Sure, please provide the journey dates?

USER: My trip dates are 12/29 and 12/31.

ASSISTANT: Hold on for a moment please.

USER: Ok.

ASSISTANT: I got Delta airlines, It is flying to Oakland on your journey date and it will cost you 100.

USER: OK, you can proceed.

ASSISTANT: May I have your name?

USER: Betty Lopez is may name.

ASSISTANT: Betty, now your flight reservation has been done.

USER: Ok, fine thank you.

ASSISTANT: Thank you and the flight number is 1004.