Hi,.
user
Hello,. How can I guide you?
assistant
 I am Lisa Scott and I want to travel from Philadelphia to Boston.
user
Sure, please provide me with the travelling codes and dates. Please provide your requirements.
assistant
The airport codes are PA-PHL to MA-BOS. My journey dates are from dec/22 to dec/24.
user
OK, are there any other requirements regarding booking?
assistant
I have a price limit of 5000 with a single connection.
user
Sorry, I have checked with the availability and found that there are no flights with your specifications.
assistant
OK, thank you for your information.
user
Thank you. Have a good day.
assistant