You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Andrew Hill here, can you find a flight for me from IAD?

ASSISTANT: Sure, I will help you. May I know your destination airport code please?

USER: Ok, my destination is IAH.

ASSISTANT: Can I have your planned travel dates please?

USER: Fine, my preferable dates are from Jan 14 to 16.

ASSISTANT: Do you have any specifications?

USER: Ok, I need a flight with single connection.

ASSISTANT: I found an economy class ticket in UA airlines with fare 100 and it has single connection. Can I book your ticket?

USER: Yes, you can.

ASSISTANT: Ok, your booking is confirmed with flight number 1029.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing us.