You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to travel from MSP to IAH. Can you help me to book a flight ticket?

ASSISTANT: Sure, may I know your travel dates?

USER: I want to travel in the flight on Jan 17 and Jan 19.

ASSISTANT: Do you have any requirements?

USER: I prefer to travel in economy class.

ASSISTANT: Ok, please wait.

USER: I want to depart in evening time and I am looking for a direct flight.

ASSISTANT: May I know your name?

USER: Emily Moore.

ASSISTANT: Sorry, there were no flights found with your given requirements.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for reaching us.