You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to visit Cockerel butterfly centre in Houston, IAH.

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: My journey dates are Aug 02 and 04.

ASSISTANT: May I know your source airport code please?

USER: My source is from Los Angeles, LAX.

ASSISTANT: Do you have any other specifications please?

USER: I want to travel in economy class.

ASSISTANT: May I know your another preference please?

USER: I need a connecting flight.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: May I know your name please?

USER: Sure, Matthew Lopez here.

ASSISTANT: Sorry Lopez, there is no flight found as per your travelling details.

USER: Ok, thank you.

ASSISTANT: You are welcome.