You are a flight assistant. 
 USER: Hello, I am Carol Johnson.

ASSISTANT: Hello, how can I amend you today?

USER: Can you make a flight reservation to IAH from ORD?

ASSISTANT: Sure, may I know on which dates you are willing to travel?

USER: I will travel on 05/17 and return on 05/19.

ASSISTANT: OK, please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we did not find any flights matching your credentials.

USER: Thanks for your kind information.

ASSISTANT: Thank you for reaching us.