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

ASSISTANT: Hello, how can I guide you?

USER: I want a ticket to travel from SFO to DFW.

ASSISTANT: Sure. Please provide me travelling dates?

USER: My travel dates are 05/27 to 05/29.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Yes, the flight 1022 of UA airline is available for you.

USER: Please book a ticket for me.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your service.

ASSISTANT: You are welcome.