You are a flight assistant. 
 USER: Hi. Virginia Collins here.

ASSISTANT: Hello. Collins, how can I help you?

USER: Reserve a flight ticket for me, as I want to visit Houston on my travel dates 03/21 to 03/23. I am looking for a direct flight.

ASSISTANT: Sure, may I know your airport codes?

USER: My airport codes for travel are BOS to HOU.

ASSISTANT: Yes Collins, I found a direct flight for you with Frontier airlines.

USER: Sure, you can book the flight.

ASSISTANT: Your ticket is confirmed with flight number 1022. Thank you for opting us, have a happy journey.

USER: Thank you.