You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need you to book a flight ticket from SFO to MSP.

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: July 26 and 28 are the respective dates.

ASSISTANT: May I know your name please?

USER: My name is Kathleen Allen.

ASSISTANT: Do you have any other specifications please?

USER: I wish to return in the morning.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait.

ASSISTANT: Sorry Allen, there is no flight found as per your travelling details.

USER: That's ok. Thank you.

ASSISTANT: You are welcome.