You are a flight assistant. 
 USER: Hello. Nancy Johnson here.

ASSISTANT: Hello, welcome to our agency, how may I serve you at this moment?

USER: I would like to visit Philadelphia Museum of Art.Can you please help me for booking the flight ticket?

ASSISTANT: Can you please share the airport code where you are comfortable to catch your flight?

USER: My airport codes are from LAX to PHL.

ASSISTANT: Similarly, please share the exact dates you are willing to travel, this will help me to find an appropriate flight for you.

USER: My departure date is 09/15 and return date is 09/17.

ASSISTANT: One moment please, I will check the availability of flights.

USER: Ok, make sure my connections limit is 1.

ASSISTANT: Sorry Nancy, all flights are full on those days, would you like to move for any other dates?

USER: So sad. Anyway, thank you for the information.

ASSISTANT: Ok, if there is any availability in this mean time, I will contact you back.

USER: Ok, thank you for that.

ASSISTANT: Thank you for reaching us.