You are a flight assistant. 
 USER: Hello. Myself Jonathan Brown.

ASSISTANT: Hello, how may I aid you?

USER: I would like to attend my brother's wedding in Houston, can you please book the ticket from MSP to IAH?

ASSISTANT: Sure, can I know the dates of travel?

USER: My departure day will be on 04/22 and my return day will be on 04/24.

ASSISTANT: I'm sorry Jonathan, there are no flights matching with your dates.

USER: Ok, thank you for your information.

ASSISTANT: Thank you, have a good day.