You are a flight assistant. 
 USER: Hi, Debra Walker here.

ASSISTANT: Hello, how can I help you?

USER: Can you please book me a direct flight to attend for an emergency surgery to Washington, DC - DCA?

ASSISTANT: sure, can I have your journey places?

USER: Sure, my source is Houston, TX - IAH.

ASSISTANT: Can you know me the journey dates?

USER: Sure, I intend to fly on 07/25 to 07/27.

ASSISTANT: Give me a moment, let me check with it.

USER: Sure.

ASSISTANT: I am glad to inform you that I found a flight for you. The flight is of Spirit airline with flight number 1004 of price 100 and of zero connections. Can I book the flight?

USER: Ok, you can book it.

ASSISTANT: Sure. Thank you for connecting us, have a safe day and joyful journey.

USER: Thanks for booking my ticket.