You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Christine Carter. I am planning to travel from SEA to PHL.

ASSISTANT: How can I assist you? Ok, may I know your travelling dates?

USER: My date of travelling is on 12/02 to 12/04.

ASSISTANT: Sorry, no flights found with your preferable dates.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.