Converted Boeing freighters have historically been the jet of choice for Amazon Air, but the new contract will see Airbus planes used for the first time.
### Instruction: What is the sentiment of this news? Please choose an answer from {negative/neutral/positive}
### Input: Converted Boeing freighters have historically been the jet of choice for Amazon Air, but the new contract will see Airbus planes used for the first time.
### Response: mildly positive