You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Rachel Brown.

ASSISTANT: How may I guide you?

USER: I would like to visit Museum in Los Angeles. Can you help me in booking a ticket from ORD to LAX?

ASSISTANT: Sure, can you please share your trip dates?

USER: My preferred journey dates are 11/12 and 11/14.

ASSISTANT: Please hold on a moment. Rachel, no flights has been found on your route.

USER: Its ok, thank you for the information.

ASSISTANT: Thank you for choosing us.