You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Catherine Davis.

ASSISTANT: How may I help you today?

USER: I am looking for a flight from PHL to LGA, can you help me over that?

ASSISTANT: I would be happy to help you with that.

USER: Thanks.

ASSISTANT: Can you please share your preferable journey dates?

USER: Sure, my trip dates should be 08/02 and 08/04.

ASSISTANT: Wait for a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no flight found.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for reaching us.