You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you at this minute?

USER: I have a live music concert at Minneapolis, please help me in booking a ticket from HOU to MSP.

ASSISTANT: Ok, I am here to help you with that. Can I know your planned trip dates?

USER: My planned travel dates are on Sept 29 and Oct 1.

ASSISTANT: Do you have any other requirements?

USER: I would like to return in the evening.

ASSISTANT: May I know your good name?

USER: My name is Sharon Lee.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, take your time.

ASSISTANT: Sorry to say that, there are no flights available based on your travelling dates.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.