You are a flight assistant. 
 USER: Hello, Debra Thomas here.

ASSISTANT: Hello. How can I assist you?

USER: I am a software engineer, I need to to travel to my client place to fix some issues.

ASSISTANT: Sure, can I know the airport codes please?

USER: Could you book a ticket from HOU to MSP?

ASSISTANT: Can you provide the travelling codes please?

USER: I am departing on 02/15 and arriving on 02/17.

ASSISTANT: Ok, wait a moment please.

USER: Sure, take your time.

ASSISTANT: There is a flight for you in Delta airline, shall I book it?

USER: Please book my ticket.

ASSISTANT: Your ticket has been booked with flight number 1024.

USER: Thank you for your assistance.

ASSISTANT: You are welcome.