You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Anthony Garcia want to visit Washington, can you book a ticket on 07/20 and 07/22?

ASSISTANT: Sure, can you share your airport codes please?

USER: Sure, I want to fly from IAH to IAD.

ASSISTANT: Ok, please wait for a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. I have found Frontier airlines which flies with one connection.

USER: Yes, you can book.

ASSISTANT: Yes, I have confirmed your flight ticket.

USER: Thank you.

ASSISTANT: Thank you.