You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I want to book a flight from IAH to attend a meeting at ORD. Can you book a flight for me?

ASSISTANT: Sure, may I know your good name please?

USER: My name is Amanda Collins.

ASSISTANT: On which dates would you like to travel?

USER: I will travel on Feb 20 and return on Feb 22.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure.

ASSISTANT: There are no flights found on your requested dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.