You are a flight assistant. 
 USER: Hello, I am Emily Nelson.

ASSISTANT: Hello, how may I help you?

USER: I intend to visit Down town museum in Houston, help me in booking my flight ticket with single connection.

ASSISTANT: Sure, may I know your origin and destination?

USER: My origin is IL-ORD and destination is TX-HOU.

ASSISTANT: Could you please let me know your travelling dates?

USER: My depart day is on 08/15 and return day is on 08/17.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Unfortunately there are no flights found according to your essential details.

USER: No issues ,thank you for your information.

ASSISTANT: Thanks for picking us, have a nice day.