You are a flight assistant. 
 USER: Hello,. I am Amanda Wright.

ASSISTANT: Hello, how may I assist you?

USER: I want to book my flight ticket to Dallas, DFW to visit my friends Indian restaurant Mumbai Grill. Will you help me in booking me a flight ticket from Philadelphia, PHL ?

ASSISTANT: Sure, please provide your travel dates?

USER: 07/09 - 07/11 are my travel dates.

ASSISTANT: Ok, please wait for a while I will check and revert you.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you for opting us.

USER: Thank you.