Analyze the sentiment expressed in the tweet. Is it positive, negative, or neutral? Explain the sentiment in relation to the stock mentioned.
TWEET: "RT @AmericanExpress: Things are looking way, way up with 5X Membership Rewards® points on flights booked directly with airlines. #AmexLife…

" STOCK: American Express DATE: 01/09/2018
Sentiment: (Provide sentiment here)
Explanation: The tweet sentiment is related to the stock mentioned, and it's important to interpret the context. The LSTM polarity score is 1 and the TextBlob polarity score is 0.1.