You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hi. How can I help you?

USER: My name is Betty Lewis, planning to book a flight ticket from PHL to CLT for couple of days.

ASSISTANT: Your date of travelling please?

USER: Planning in february month from 02/27 to 02/29.

ASSISTANT: I am sorry, no flights available on you date?

USER: It's ok. Thank you.

ASSISTANT: Thank you.