You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be of your service?

USER: I am William Phillips. I am looking for a flight with single connection in my journey, can you help me in booking?

ASSISTANT: Sure, we are here to help you. May I know when you want to travel?

USER: My travelling dates are 09/12 to 09/14.

ASSISTANT: Do you have any price limit?

USER: I can spend up to 1000.

ASSISTANT: Can you provide me your airport codes?

USER: My source and destination airport codes are DTW to SFO.

ASSISTANT: Thanks for giving your details. We found a Hawaiian airline with flight number 1020 and price of 200 available for you.

USER: You can book it.

ASSISTANT: Your booking is done.

USER: Thank you for booking.

ASSISTANT: Thank you for picking us.