You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samuel Hall here.

ASSISTANT: Hall, how may I help you?

USER: I want to meet my grandparents, please book my ticket from OAK to ORD.

ASSISTANT: Sure, can you please provide me your travel dates?

USER: My journey dates are 11/15 and 11/17.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Flight-1011 is available in Spirit airlines and the ticket fare is 200 only. Is it ok for you?

USER: Yes, book my ticket.

ASSISTANT: Hall, I have booked your ticket successfully.

USER: Thank you.

ASSISTANT: You are welcome and thank you for choosing us.