You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Elizabeth Johnson, I plan to visit to Museum of Fine Art at Boston on 03/10. Can you help me to a flight ticket?

ASSISTANT: Sure, may I know your price limit?

USER: I like to spend up to 1000.

ASSISTANT: Could you please provide your nearest airport codes for booking?

USER: My source airport code is TX-HOU and destination airport code is MA-BOS.

ASSISTANT: Ok, may I know your preferable dates that you want to travel?

USER: I will return on 03/12.

ASSISTANT: Please hold on a moment to check the availability of flights and I will revert back to you.

USER: Sure.

ASSISTANT: Sorry to inform you that, there are no flights running in your route with your requested dates of travelling.

USER: Ok, thank you for the details.

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