You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Donald Miller here.

ASSISTANT: How can I help you today?

USER: My airport codes for boarding the flight are SFO to HOU. Can you reserve a flight ticket?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: My preferable dates for travel are 04/01 to 04/03. The price limit is less than 500.

ASSISTANT: Here, I found a flight for you with single connection and ticket fare is 100.

USER: I am ok with the single connection flight. You can book it.

ASSISTANT: Your ticket is booked with flight number 1021 and airline is Hawaiian.

USER: Thank you.

ASSISTANT: Welcome. Have a safe flight.