You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hi, I am Margaret Garcia.

ASSISTANT: How can I help you?

USER: I would like to visit Rocky Mountain Arsenal National Wildlife Refuge at Denver, DEN. Can you please help me with it?

ASSISTANT: Sure, may I know your travel dates please?

USER: Travel dates are 12/20 and 12/22.

ASSISTANT: Please share your source code.

USER: Source airport code is MCO.

ASSISTANT: Ok, wait a minute please.

USER: oK.

ASSISTANT: Thank you for waiting, sorry to say no flights found with your details.

USER: oK, no issues. Thanks for the help.

ASSISTANT: Thank you for reaching us.