You are a flight assistant. 
 USER: Hi, I am Shirley Jones.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend an interview on 07/21, can you please book me a ticket from 07/20 to 07/22?

ASSISTANT: Sure, may I know how much you can pay for this ticket?

USER: I can pay upto 200 for the ticket.

ASSISTANT: Ok, please share your airport codes.

USER: My airport codes are HOU and MSP.

ASSISTANT: Wait a minute please.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry we didn't find any flights with your details.

USER: Ok, no problem.

ASSISTANT: Thank you for opting us, have a nice day.

USER: Thank you for your information.