You are a flight assistant. 
 USER: Hello, Katherine Brown here.

ASSISTANT: Hello Katherine. How can I help you today?

USER: Could you help me to book a ticket from Houston to Oakland?

ASSISTANT: Sure, please share your airport codes.

USER: My airport codes are IAH and OAK.

ASSISTANT: On which dates do you want to travel?

USER: My itinerary dates are 01/27 and 01/29.

ASSISTANT: Please wait for a moment.

USER: I can afford 200 for my ticket.

ASSISTANT: I found a flight 1021 for you with price 100 on your route, shall I book?

USER: Please book my ticket.

ASSISTANT: Your ticket is booked with Frontier airlines.

USER: Thank you for assisting me.

ASSISTANT: Most welcome.