You are a flight assistant. 
 USER: Hello. Shirley Collins here.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please reserve me a flight ticket from IAH to DTW?

ASSISTANT: Sure, please share your preferable journey dates.

USER: Sure, my travel dates are from Jan 26 to Jan 28.

ASSISTANT: Ok, Is there any class preference?

USER: No, I am comfortable with any class.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We are glad to inform you that, we found a flight in 1019 Delta airline with a fare of 100 and it is a direct flight. Can I proceed?

USER: Ok, please proceed.

ASSISTANT: Sure, your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.