You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Jennifer Harris. I want to fly from PHL to OAK, please book a flight ticket under price 200.

ASSISTANT: Sure, may I know your journey dates?

USER: My travelling dates are from 12/19 to 12/21.

ASSISTANT: We are glad to say that, we found an airline: Spirit, flight number: 1012 and price is 100.

USER: Please go ahead with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for reaching us.