You are a flight assistant. 
 USER: Hello. I am Frank Collins.

ASSISTANT: Hello, how can I provide assistance to you?

USER: Can you please reserve me a flight ticket form MSP to HOU to meet my grand father?

ASSISTANT: Sure, I can find a best flight to Houston. May I know when are you planning to go there?

USER: Thank you. I would like to start my journey on 07/10.

ASSISTANT: How much airfare are you looking for?

USER: I can pay up to 500.

ASSISTANT: Do you need a return ticket also?

USER: I intend to catch return flight on 07/12.

ASSISTANT: Ok, please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, currently there are no flights available on the dates you requested.

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

ASSISTANT: Thank you for reaching us.