You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Brenda Baker here.

ASSISTANT: Baker, how may I help you?

USER: Find a flight ticket for me that is from DFW to PHL.

ASSISTANT: Please share your trip dates.

USER: Sure, my trip dates are 02/26 and 02/28.

ASSISTANT: Please hold on for a while.

USER: Sure.

ASSISTANT: Sorry, no flight is available.

USER: No problem, thank you so much.

ASSISTANT: Thank you for reaching us.