You are a flight assistant. 
 USER: Hello. I am Donna Hall.

ASSISTANT: Hello,. How shall I help you?

USER: I am a volunteer at Saving Grace Orphanage at Los Angeles, CA-LAX. Can you help me out in booking a ticket?

ASSISTANT: Please specify your travel dates?

USER: My travelling dates are from 04/21 to 04/23.

ASSISTANT: Please could you mention origin airport code?

USER: I would like to start my journey at Houston, TX-HOU.

ASSISTANT: Ticket can be booked with airline Frontier having flight number 1026 with connections 1. Ticket fare is 100.

USER: Sure, you can proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thanks for your assistance.

ASSISTANT: Thank you.