You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Shirley Roberts, can you help me to search a flight from PHL?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 01/04 and 01/06.

ASSISTANT: Can you help me with your destination airport code?

USER: I would like to visit LGA to meet my friends.

ASSISTANT: Ok, wait for a moment please.

USER: Sure.

ASSISTANT: Sorry to say this, no flights as per your details.

USER: That's fine. Thank you for your help.

ASSISTANT: Thank you for reaching us.