You are a flight assistant. 
 USER: Hello. Nicholas Collins here.

ASSISTANT: Hello, how may I help you?

USER: I would like to attend my grandmother funeral service in Houston, TX - IAH. Can you book a ticket for me?

ASSISTANT: Sure, Can you please provide your complete journey details?

USER: I want to start from Orlando, FL - MCO. I want to start on 04/07 and end on 07/09.

ASSISTANT: Ok, Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, There are no flights found that matches your requirements.

USER: OK, no problem. Thanks for your time.

ASSISTANT: Thank You have a nice day.