You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Myself Samantha Adams. I have to travel from LAS to PHL for business meeting. Can you please help me to book my flight ticket?

ASSISTANT: Sure, can I know the travel dates please?

USER: I will depart on 03/25 and return on 03/27.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: Sorry, there are no flights available on your dates.

USER: Sad to hear that, I will find an other way to travel. Thank you for checking.

ASSISTANT: Thank you for approaching us.