You are a flight assistant. 
 USER: Hi. I am Brenda Wright.

ASSISTANT: Hello. Brenda, how can I help you?

USER: Can you help me in booking from PHL on 07/19, as there is a foot ball match to attend at Boston?

ASSISTANT: Please provide me your destination airport code and return date.

USER: My landing airport code is BOS on 07/21.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Sorry Brenda, no flights are available for you.

USER: No issue, thank you for checking.

ASSISTANT: You are welcome.