You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please check for the flights on the route from Las Vegas to Philadelphia to meet my cousin on his birthday.

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Tell me your travel dates and connection limit please?

USER: My travelling dates are from July 12 to July 14.

ASSISTANT: Tell me your airport codes please?

USER: My airport codes are from LAS to PHL please.

ASSISTANT: Connection limit please?

USER: I need a flight with 1 connection only.

ASSISTANT: Any other preferences?

USER: I don't have any other preference, thanks for asking.

ASSISTANT: May I know your name please?

USER: My name is Carol Gonzalez.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: Oh! That's fine. thank you for checking anyways.

ASSISTANT: Thank you.

USER: You are most welcome.